content/browser/frame_host/render_widget_host_view_guest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/bind_helpers.h"
   6 #include "base/command_line.h"
   7 #include "base/logging.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "content/browser/browser_plugin/browser_plugin_guest.h"
  10 #include "content/browser/frame_host/render_widget_host_view_guest.h"
  11 #include "content/browser/renderer_host/render_view_host_impl.h"
  12 #include "content/common/browser_plugin/browser_plugin_messages.h"
  13 #include "content/common/frame_messages.h"
  14 #include "content/common/gpu/gpu_messages.h"
  15 #include "content/common/input/web_touch_event_traits.h"
  16 #include "content/common/view_messages.h"
  17 #include "content/common/webplugin_geometry.h"
  18 #include "content/public/common/content_switches.h"
  19 #include "skia/ext/platform_canvas.h"
  20 #include "third_party/WebKit/public/platform/WebScreenInfo.h"
  21
  22 #if defined(OS_MACOSX)
  23 #import "content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.h"
  24 #endif
  25
  26 #if defined(USE_AURA)
  27 #include "content/browser/renderer_host/ui_events_helper.h"
  28 #endif
  29
  30 namespace content {
  31
  32 namespace {
  33
  34 #if defined(USE_AURA)
  35 blink::WebGestureEvent CreateFlingCancelEvent(double time_stamp) {
  36   blink::WebGestureEvent gesture_event;
  37   gesture_event.timeStampSeconds = time_stamp;
  38   gesture_event.type = blink::WebGestureEvent::GestureFlingCancel;
  39   gesture_event.sourceDevice = blink::WebGestureDeviceTouchscreen;
  40   return gesture_event;
  41 }
  42 #endif  // defined(USE_AURA)
  43
  44 }  // namespace
  45
  46 RenderWidgetHostViewGuest::RenderWidgetHostViewGuest(
  47     RenderWidgetHost* widget_host,
  48     BrowserPluginGuest* guest,
  49     base::WeakPtr<RenderWidgetHostViewBase> platform_view)
  50     : RenderWidgetHostViewChildFrame(widget_host),
  51       // |guest| is NULL during test.
  52       guest_(guest ? guest->AsWeakPtr() : base::WeakPtr<BrowserPluginGuest>()),
  53       platform_view_(platform_view) {
  54 #if defined(USE_AURA)
  55   gesture_recognizer_.reset(ui::GestureRecognizer::Create());
  56   gesture_recognizer_->AddGestureEventHelper(this);
  57 #endif  // defined(USE_AURA)
  58 }
  59
  60 RenderWidgetHostViewGuest::~RenderWidgetHostViewGuest() {
  61 #if defined(USE_AURA)
  62   gesture_recognizer_->RemoveGestureEventHelper(this);
  63 #endif  // defined(USE_AURA)
  64 }
  65
  66 bool RenderWidgetHostViewGuest::OnMessageReceivedFromEmbedder(
  67     const IPC::Message& message,
  68     RenderWidgetHostImpl* embedder) {
  69   bool handled = true;
  70   IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(RenderWidgetHostViewGuest, message,
  71                                    embedder)
  72     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_HandleInputEvent,
  73                         OnHandleInputEvent)
  74     IPC_MESSAGE_UNHANDLED(handled = false)
  75   IPC_END_MESSAGE_MAP()
  76   return handled;
  77 }
  78
  79 void RenderWidgetHostViewGuest::WasShown() {
  80   // If the WebContents associated with us showed an interstitial page in the
  81   // beginning, the teardown path might call WasShown() while |host_| is in
  82   // the process of destruction. Avoid calling WasShown below in this case.
  83   // TODO(lazyboy): We shouldn't be showing interstitial pages in guests in the
  84   // first place: http://crbug.com/273089.
  85   //
  86   // |guest_| is NULL during test.
  87   if ((guest_ && guest_->is_in_destruction()) || !host_->is_hidden())
  88     return;
  89   // Make sure the size of this view matches the size of the WebContentsView.
  90   // The two sizes may fall out of sync if we switch RenderWidgetHostViews,
  91   // resize, and then switch page, as is the case with interstitial pages.
  92   // NOTE: |guest_| is NULL in unit tests.
  93   if (guest_)
  94     SetSize(guest_->web_contents()->GetViewBounds().size());
  95   host_->WasShown(ui::LatencyInfo());
  96 }
  97
  98 void RenderWidgetHostViewGuest::WasHidden() {
  99   // |guest_| is NULL during test.
 100   if ((guest_ && guest_->is_in_destruction()) || host_->is_hidden())
 101     return;
 102   host_->WasHidden();
 103 }
 104
 105 void RenderWidgetHostViewGuest::SetSize(const gfx::Size& size) {
 106   size_ = size;
 107   host_->WasResized();
 108 }
 109
 110 void RenderWidgetHostViewGuest::SetBounds(const gfx::Rect& rect) {
 111   SetSize(rect.size());
 112 }
 113
 114 void RenderWidgetHostViewGuest::Focus() {
 115   // InterstitialPageImpl focuses views directly, so we place focus logic here.
 116   // InterstitialPages are not WebContents, and so BrowserPluginGuest does not
 117   // have direct access to the interstitial page's RenderWidgetHost.
 118   if (guest_)
 119     guest_->SetFocus(host_, true);
 120 }
 121
 122 bool RenderWidgetHostViewGuest::HasFocus() const {
 123   if (!guest_)
 124     return false;
 125   return guest_->focused();
 126 }
 127
 128 #if defined(USE_AURA)
 129 void RenderWidgetHostViewGuest::ProcessAckedTouchEvent(
 130     const TouchEventWithLatencyInfo& touch, InputEventAckState ack_result) {
 131   // TODO(fsamuel): Currently we will only take this codepath if the guest has
 132   // requested touch events. A better solution is to always forward touchpresses
 133   // to the embedder process to target a BrowserPlugin, and then route all
 134   // subsequent touch points of that touchdown to the appropriate guest until
 135   // that touch point is released.
 136   ScopedVector<ui::TouchEvent> events;
 137   if (!MakeUITouchEventsFromWebTouchEvents(touch, &events, LOCAL_COORDINATES))
 138     return;
 139
 140   ui::EventResult result = (ack_result ==
 141       INPUT_EVENT_ACK_STATE_CONSUMED) ? ui::ER_HANDLED : ui::ER_UNHANDLED;
 142   for (ScopedVector<ui::TouchEvent>::iterator iter = events.begin(),
 143       end = events.end(); iter != end; ++iter)  {
 144     if (!gesture_recognizer_->ProcessTouchEventPreDispatch(*(*iter), this))
 145       continue;
 146
 147     scoped_ptr<ui::GestureRecognizer::Gestures> gestures;
 148     gestures.reset(gesture_recognizer_->ProcessTouchEventPostDispatch(
 149         *(*iter), result, this));
 150     ProcessGestures(gestures.get());
 151   }
 152 }
 153 #endif
 154
 155 gfx::Rect RenderWidgetHostViewGuest::GetViewBounds() const {
 156   if (!guest_)
 157     return gfx::Rect();
 158
 159   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 160   gfx::Rect embedder_bounds;
 161   if (rwhv)
 162     embedder_bounds = rwhv->GetViewBounds();
 163   return gfx::Rect(
 164       guest_->GetScreenCoordinates(embedder_bounds.origin()), size_);
 165 }
 166
 167 void RenderWidgetHostViewGuest::RenderProcessGone(
 168     base::TerminationStatus status,
 169     int error_code) {
 170   platform_view_->RenderProcessGone(status, error_code);
 171   // Destroy the guest view instance only, so we don't end up calling
 172   // platform_view_->Destroy().
 173   DestroyGuestView();
 174 }
 175
 176 void RenderWidgetHostViewGuest::Destroy() {
 177   // The RenderWidgetHost's destruction led here, so don't call it.
 178   DestroyGuestView();
 179
 180   if (platform_view_)  // The platform view might have been destroyed already.
 181     platform_view_->Destroy();
 182 }
 183
 184 gfx::Size RenderWidgetHostViewGuest::GetPhysicalBackingSize() const {
 185   return RenderWidgetHostViewBase::GetPhysicalBackingSize();
 186 }
 187
 188 base::string16 RenderWidgetHostViewGuest::GetSelectedText() const {
 189   return platform_view_->GetSelectedText();
 190 }
 191
 192 void RenderWidgetHostViewGuest::SetTooltipText(
 193     const base::string16& tooltip_text) {
 194   if (guest_)
 195     guest_->SetTooltipText(tooltip_text);
 196 }
 197
 198 void RenderWidgetHostViewGuest::OnSwapCompositorFrame(
 199     uint32 output_surface_id,
 200     scoped_ptr<cc::CompositorFrame> frame) {
 201   if (!guest_)
 202     return;
 203
 204   last_scroll_offset_ = frame->metadata.root_scroll_offset;
 205   guest_->SwapCompositorFrame(output_surface_id,
 206                               host_->GetProcess()->GetID(),
 207                               host_->GetRoutingID(),
 208                               frame.Pass());
 209 }
 210
 211 bool RenderWidgetHostViewGuest::OnMessageReceived(const IPC::Message& msg) {
 212   return platform_view_->OnMessageReceived(msg);
 213 }
 214
 215 void RenderWidgetHostViewGuest::InitAsChild(
 216     gfx::NativeView parent_view) {
 217   platform_view_->InitAsChild(parent_view);
 218 }
 219
 220 void RenderWidgetHostViewGuest::InitAsPopup(
 221     RenderWidgetHostView* parent_host_view, const gfx::Rect& pos) {
 222   // This should never get called.
 223   NOTREACHED();
 224 }
 225
 226 void RenderWidgetHostViewGuest::InitAsFullscreen(
 227     RenderWidgetHostView* reference_host_view) {
 228   // This should never get called.
 229   NOTREACHED();
 230 }
 231
 232 gfx::NativeView RenderWidgetHostViewGuest::GetNativeView() const {
 233   if (!guest_)
 234     return gfx::NativeView();
 235
 236   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 237   if (!rwhv)
 238     return gfx::NativeView();
 239   return rwhv->GetNativeView();
 240 }
 241
 242 gfx::NativeViewId RenderWidgetHostViewGuest::GetNativeViewId() const {
 243   if (!guest_)
 244     return static_cast<gfx::NativeViewId>(NULL);
 245
 246   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 247   if (!rwhv)
 248     return static_cast<gfx::NativeViewId>(NULL);
 249   return rwhv->GetNativeViewId();
 250 }
 251
 252 gfx::NativeViewAccessible RenderWidgetHostViewGuest::GetNativeViewAccessible() {
 253   if (!guest_)
 254     return gfx::NativeViewAccessible();
 255
 256   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 257   if (!rwhv)
 258     return gfx::NativeViewAccessible();
 259   return rwhv->GetNativeViewAccessible();
 260 }
 261
 262 void RenderWidgetHostViewGuest::MovePluginWindows(
 263     const std::vector<WebPluginGeometry>& moves) {
 264   platform_view_->MovePluginWindows(moves);
 265 }
 266
 267 void RenderWidgetHostViewGuest::UpdateCursor(const WebCursor& cursor) {
 268   // InterstitialPages are not WebContents so we cannot intercept
 269   // ViewHostMsg_SetCursor for interstitial pages in BrowserPluginGuest.
 270   // All guest RenderViewHosts have RenderWidgetHostViewGuests however,
 271   // and so we will always hit this code path.
 272   if (!guest_)
 273     return;
 274   guest_->SendMessageToEmbedder(
 275       new BrowserPluginMsg_SetCursor(guest_->browser_plugin_instance_id(),
 276                                      cursor));
 277
 278 }
 279
 280 void RenderWidgetHostViewGuest::SetIsLoading(bool is_loading) {
 281   platform_view_->SetIsLoading(is_loading);
 282 }
 283
 284 void RenderWidgetHostViewGuest::TextInputTypeChanged(
 285     ui::TextInputType type,
 286     ui::TextInputMode input_mode,
 287     bool can_compose_inline,
 288     int flags) {
 289   if (!guest_)
 290     return;
 291
 292   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 293   if (!rwhv)
 294     return;
 295   // Forward the information to embedding RWHV.
 296   rwhv->TextInputTypeChanged(type, input_mode, can_compose_inline, flags);
 297 }
 298
 299 void RenderWidgetHostViewGuest::ImeCancelComposition() {
 300   if (!guest_)
 301     return;
 302
 303   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 304   if (!rwhv)
 305     return;
 306   // Forward the information to embedding RWHV.
 307   rwhv->ImeCancelComposition();
 308 }
 309
 310 #if defined(OS_MACOSX) || defined(USE_AURA)
 311 void RenderWidgetHostViewGuest::ImeCompositionRangeChanged(
 312     const gfx::Range& range,
 313     const std::vector<gfx::Rect>& character_bounds) {
 314   if (!guest_)
 315     return;
 316
 317   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 318   if (!rwhv)
 319     return;
 320   std::vector<gfx::Rect> guest_character_bounds;
 321   for (size_t i = 0; i < character_bounds.size(); ++i) {
 322     guest_character_bounds.push_back(gfx::Rect(
 323         guest_->GetScreenCoordinates(character_bounds[i].origin()),
 324         character_bounds[i].size()));
 325   }
 326   // Forward the information to embedding RWHV.
 327   rwhv->ImeCompositionRangeChanged(range, guest_character_bounds);
 328 }
 329 #endif
 330
 331 void RenderWidgetHostViewGuest::SelectionChanged(const base::string16& text,
 332                                                  size_t offset,
 333                                                  const gfx::Range& range) {
 334   platform_view_->SelectionChanged(text, offset, range);
 335 }
 336
 337 void RenderWidgetHostViewGuest::SelectionBoundsChanged(
 338     const ViewHostMsg_SelectionBounds_Params& params) {
 339   if (!guest_)
 340     return;
 341
 342   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 343   if (!rwhv)
 344     return;
 345   ViewHostMsg_SelectionBounds_Params guest_params(params);
 346   guest_params.anchor_rect.set_origin(
 347       guest_->GetScreenCoordinates(params.anchor_rect.origin()));
 348   guest_params.focus_rect.set_origin(
 349       guest_->GetScreenCoordinates(params.focus_rect.origin()));
 350   rwhv->SelectionBoundsChanged(guest_params);
 351 }
 352
 353 void RenderWidgetHostViewGuest::CopyFromCompositingSurface(
 354     const gfx::Rect& src_subrect,
 355     const gfx::Size& dst_size,
 356     CopyFromCompositingSurfaceCallback& callback,
 357     const SkColorType color_type) {
 358   CHECK(guest_);
 359   guest_->CopyFromCompositingSurface(src_subrect, dst_size, callback);
 360 }
 361
 362 void RenderWidgetHostViewGuest::SetBackgroundColor(SkColor color) {
 363   // Content embedders can toggle opaque backgrounds through this API.
 364   // We plumb the value here so that BrowserPlugin updates its compositing
 365   // state in response to this change. We also want to preserve this flag
 366   // after recovering from a crash so we let BrowserPluginGuest store it.
 367   if (!guest_)
 368     return;
 369   RenderWidgetHostViewBase::SetBackgroundColor(color);
 370   bool opaque = GetBackgroundOpaque();
 371   host_->SetBackgroundOpaque(opaque);
 372   guest_->SetContentsOpaque(opaque);
 373 }
 374
 375 bool RenderWidgetHostViewGuest::LockMouse() {
 376   return platform_view_->LockMouse();
 377 }
 378
 379 void RenderWidgetHostViewGuest::UnlockMouse() {
 380   return platform_view_->UnlockMouse();
 381 }
 382
 383 void RenderWidgetHostViewGuest::GetScreenInfo(blink::WebScreenInfo* results) {
 384   if (!guest_)
 385     return;
 386   RenderWidgetHostViewBase* embedder_view = GetGuestRenderWidgetHostView();
 387   if (embedder_view)
 388     embedder_view->GetScreenInfo(results);
 389 }
 390
 391 #if defined(OS_MACOSX)
 392 void RenderWidgetHostViewGuest::SetActive(bool active) {
 393   platform_view_->SetActive(active);
 394 }
 395
 396 void RenderWidgetHostViewGuest::SetWindowVisibility(bool visible) {
 397   platform_view_->SetWindowVisibility(visible);
 398 }
 399
 400 void RenderWidgetHostViewGuest::WindowFrameChanged() {
 401   platform_view_->WindowFrameChanged();
 402 }
 403
 404 void RenderWidgetHostViewGuest::ShowDefinitionForSelection() {
 405   if (!guest_)
 406     return;
 407
 408   gfx::Point origin;
 409   gfx::Rect guest_bounds = GetViewBounds();
 410   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 411   gfx::Rect embedder_bounds;
 412   if (rwhv)
 413     embedder_bounds = rwhv->GetViewBounds();
 414
 415   gfx::Vector2d guest_offset = gfx::Vector2d(
 416       // Horizontal offset of guest from embedder.
 417       guest_bounds.x() - embedder_bounds.x(),
 418       // Vertical offset from guest's top to embedder's bottom edge.
 419       embedder_bounds.bottom() - guest_bounds.y());
 420
 421   RenderWidgetHostViewMacDictionaryHelper helper(platform_view_.get());
 422   helper.SetTargetView(rwhv);
 423   helper.set_offset(guest_offset);
 424   helper.ShowDefinitionForSelection();
 425 }
 426
 427 bool RenderWidgetHostViewGuest::SupportsSpeech() const {
 428   return platform_view_->SupportsSpeech();
 429 }
 430
 431 void RenderWidgetHostViewGuest::SpeakSelection() {
 432   platform_view_->SpeakSelection();
 433 }
 434
 435 bool RenderWidgetHostViewGuest::IsSpeaking() const {
 436   return platform_view_->IsSpeaking();
 437 }
 438
 439 void RenderWidgetHostViewGuest::StopSpeaking() {
 440   platform_view_->StopSpeaking();
 441 }
 442
 443 bool RenderWidgetHostViewGuest::PostProcessEventForPluginIme(
 444     const NativeWebKeyboardEvent& event) {
 445   return false;
 446 }
 447
 448 #endif  // defined(OS_MACOSX)
 449
 450 #if defined(OS_ANDROID) || defined(TOOLKIT_VIEWS)
 451 void RenderWidgetHostViewGuest::ShowDisambiguationPopup(
 452     const gfx::Rect& rect_pixels,
 453     const SkBitmap& zoomed_bitmap) {
 454 }
 455 #endif  // defined(OS_ANDROID) || defined(TOOLKIT_VIEWS)
 456
 457 #if defined(OS_ANDROID)
 458 void RenderWidgetHostViewGuest::LockCompositingSurface() {
 459 }
 460
 461 void RenderWidgetHostViewGuest::UnlockCompositingSurface() {
 462 }
 463 #endif  // defined(OS_ANDROID)
 464
 465 #if defined(OS_WIN)
 466 void RenderWidgetHostViewGuest::SetParentNativeViewAccessible(
 467     gfx::NativeViewAccessible accessible_parent) {
 468 }
 469
 470 gfx::NativeViewId RenderWidgetHostViewGuest::GetParentForWindowlessPlugin()
 471     const {
 472   return NULL;
 473 }
 474 #endif
 475
 476 void RenderWidgetHostViewGuest::DestroyGuestView() {
 477   host_->SetView(NULL);
 478   host_ = NULL;
 479   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 480 }
 481
 482 bool RenderWidgetHostViewGuest::CanDispatchToConsumer(
 483     ui::GestureConsumer* consumer) {
 484   CHECK_EQ(static_cast<RenderWidgetHostViewGuest*>(consumer), this);
 485   return true;
 486 }
 487
 488 void RenderWidgetHostViewGuest::DispatchGestureEvent(
 489     ui::GestureEvent* event) {
 490   ForwardGestureEventToRenderer(event);
 491 }
 492
 493 void RenderWidgetHostViewGuest::DispatchCancelTouchEvent(
 494     ui::TouchEvent* event) {
 495   if (!host_)
 496     return;
 497
 498   blink::WebTouchEvent cancel_event;
 499   // TODO(rbyers): This event has no touches in it.  Don't we need to know what
 500   // touches are currently active in order to cancel them all properly?
 501   WebTouchEventTraits::ResetType(blink::WebInputEvent::TouchCancel,
 502                                  event->time_stamp().InSecondsF(),
 503                                  &cancel_event);
 504
 505   host_->ForwardTouchEventWithLatencyInfo(cancel_event, *event->latency());
 506 }
 507
 508 bool RenderWidgetHostViewGuest::ForwardGestureEventToRenderer(
 509     ui::GestureEvent* gesture) {
 510 #if defined(USE_AURA)
 511   if (!host_)
 512     return false;
 513
 514   if ((gesture->type() == ui::ET_GESTURE_PINCH_BEGIN ||
 515       gesture->type() == ui::ET_GESTURE_PINCH_UPDATE ||
 516       gesture->type() == ui::ET_GESTURE_PINCH_END) && !pinch_zoom_enabled_) {
 517     return true;
 518   }
 519
 520   blink::WebGestureEvent web_gesture =
 521       MakeWebGestureEventFromUIEvent(*gesture);
 522   const gfx::Point& client_point = gesture->location();
 523   const gfx::Point& screen_point = gesture->location();
 524
 525   web_gesture.x = client_point.x();
 526   web_gesture.y = client_point.y();
 527   web_gesture.globalX = screen_point.x();
 528   web_gesture.globalY = screen_point.y();
 529
 530   if (web_gesture.type == blink::WebGestureEvent::Undefined)
 531     return false;
 532   if (web_gesture.type == blink::WebGestureEvent::GestureTapDown) {
 533     host_->ForwardGestureEvent(
 534         CreateFlingCancelEvent(gesture->time_stamp().InSecondsF()));
 535   }
 536   host_->ForwardGestureEvent(web_gesture);
 537   return true;
 538 #else
 539   return false;
 540 #endif
 541 }
 542
 543 void RenderWidgetHostViewGuest::ProcessGestures(
 544     ui::GestureRecognizer::Gestures* gestures) {
 545   if ((gestures == NULL) || gestures->empty())
 546     return;
 547   for (ui::GestureRecognizer::Gestures::iterator g_it = gestures->begin();
 548       g_it != gestures->end();
 549       ++g_it) {
 550     ForwardGestureEventToRenderer(*g_it);
 551   }
 552 }
 553
 554 SkColorType RenderWidgetHostViewGuest::PreferredReadbackFormat() {
 555   return kN32_SkColorType;
 556 }
 557
 558 RenderWidgetHostViewBase*
 559 RenderWidgetHostViewGuest::GetGuestRenderWidgetHostView() const {
 560   return static_cast<RenderWidgetHostViewBase*>(
 561       guest_->GetEmbedderRenderWidgetHostView());
 562 }
 563
 564 void RenderWidgetHostViewGuest::OnHandleInputEvent(
 565     RenderWidgetHostImpl* embedder,
 566     int browser_plugin_instance_id,
 567     const gfx::Rect& guest_window_rect,
 568     const blink::WebInputEvent* event) {
 569   if (blink::WebInputEvent::isMouseEventType(event->type)) {
 570     host_->ForwardMouseEvent(
 571         *static_cast<const blink::WebMouseEvent*>(event));
 572     return;
 573   }
 574
 575   if (event->type == blink::WebInputEvent::MouseWheel) {
 576     host_->ForwardWheelEvent(
 577         *static_cast<const blink::WebMouseWheelEvent*>(event));
 578     return;
 579   }
 580
 581   if (blink::WebInputEvent::isKeyboardEventType(event->type)) {
 582     if (!embedder->GetLastKeyboardEvent())
 583       return;
 584     NativeWebKeyboardEvent keyboard_event(*embedder->GetLastKeyboardEvent());
 585     host_->ForwardKeyboardEvent(keyboard_event);
 586     return;
 587   }
 588
 589   if (blink::WebInputEvent::isTouchEventType(event->type)) {
 590     host_->ForwardTouchEventWithLatencyInfo(
 591         *static_cast<const blink::WebTouchEvent*>(event),
 592         ui::LatencyInfo());
 593     return;
 594   }
 595
 596   if (blink::WebInputEvent::isGestureEventType(event->type)) {
 597     host_->ForwardGestureEvent(
 598         *static_cast<const blink::WebGestureEvent*>(event));
 599     return;
 600   }
 601 }
 602
 603 }  // namespace content