content/test/layouttest_support.cc

   1 // Copyright (c) 2012 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 "content/public/test/layouttest_support.h"
   6
   7 #include "base/callback.h"
   8 #include "base/lazy_instance.h"
   9 #include "cc/blink/web_layer_impl.h"
  10 #include "content/browser/bluetooth/bluetooth_dispatcher_host.h"
  11 #include "content/browser/renderer_host/render_process_host_impl.h"
  12 #include "content/browser/renderer_host/render_widget_host_impl.h"
  13 #include "content/child/geofencing/web_geofencing_provider_impl.h"
  14 #include "content/common/gpu/image_transport_surface.h"
  15 #include "content/public/common/page_state.h"
  16 #include "content/public/renderer/renderer_gamepad_provider.h"
  17 #include "content/renderer/fetchers/manifest_fetcher.h"
  18 #include "content/renderer/history_entry.h"
  19 #include "content/renderer/history_serialization.h"
  20 #include "content/renderer/render_frame_impl.h"
  21 #include "content/renderer/render_thread_impl.h"
  22 #include "content/renderer/render_view_impl.h"
  23 #include "content/renderer/renderer_blink_platform_impl.h"
  24 #include "content/shell/renderer/test_runner/test_common.h"
  25 #include "content/shell/renderer/test_runner/web_frame_test_proxy.h"
  26 #include "content/shell/renderer/test_runner/web_test_proxy.h"
  27 #include "device/bluetooth/bluetooth_adapter.h"
  28 #include "third_party/WebKit/public/platform/WebBatteryStatus.h"
  29 #include "third_party/WebKit/public/platform/WebGamepads.h"
  30 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceMotionData.h"
  31 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceOrientationData.h"
  32 #include "third_party/WebKit/public/web/WebHistoryItem.h"
  33 #include "third_party/WebKit/public/web/WebView.h"
  34
  35 #if defined(OS_MACOSX)
  36 #include "content/browser/frame_host/popup_menu_helper_mac.h"
  37 #endif
  38
  39 using blink::WebBatteryStatus;
  40 using blink::WebDeviceMotionData;
  41 using blink::WebDeviceOrientationData;
  42 using blink::WebGamepad;
  43 using blink::WebGamepads;
  44 using blink::WebRect;
  45 using blink::WebSize;
  46
  47 namespace content {
  48
  49 namespace {
  50
  51 base::LazyInstance<base::Callback<void(RenderView*, WebTestProxyBase*)> >::Leaky
  52     g_callback = LAZY_INSTANCE_INITIALIZER;
  53
  54 RenderViewImpl* CreateWebTestProxy(const ViewMsg_New_Params& params) {
  55   typedef WebTestProxy<RenderViewImpl, const ViewMsg_New_Params&> ProxyType;
  56   ProxyType* render_view_proxy = new ProxyType(params);
  57   if (g_callback == 0)
  58     return render_view_proxy;
  59   g_callback.Get().Run(render_view_proxy, render_view_proxy);
  60   return render_view_proxy;
  61 }
  62
  63 WebTestProxyBase* GetWebTestProxyBase(RenderViewImpl* render_view) {
  64   typedef WebTestProxy<RenderViewImpl, ViewMsg_New_Params*> ViewProxy;
  65
  66   ViewProxy* render_view_proxy = static_cast<ViewProxy*>(render_view);
  67   return static_cast<WebTestProxyBase*>(render_view_proxy);
  68 }
  69
  70 RenderFrameImpl* CreateWebFrameTestProxy(
  71     RenderViewImpl* render_view,
  72     int32 routing_id) {
  73   typedef WebFrameTestProxy<RenderFrameImpl, RenderViewImpl*, int32> FrameProxy;
  74
  75   FrameProxy* render_frame_proxy = new FrameProxy(render_view, routing_id);
  76   render_frame_proxy->set_base_proxy(GetWebTestProxyBase(render_view));
  77
  78   return render_frame_proxy;
  79 }
  80
  81 }  // namespace
  82
  83
  84 void EnableWebTestProxyCreation(
  85     const base::Callback<void(RenderView*, WebTestProxyBase*)>& callback) {
  86   g_callback.Get() = callback;
  87   RenderViewImpl::InstallCreateHook(CreateWebTestProxy);
  88   RenderFrameImpl::InstallCreateHook(CreateWebFrameTestProxy);
  89 }
  90
  91 void FetchManifestDoneCallback(
  92     scoped_ptr<ManifestFetcher> fetcher,
  93     const FetchManifestCallback& callback,
  94     const blink::WebURLResponse& response,
  95     const std::string& data) {
  96   // |fetcher| will be autodeleted here as it is going out of scope.
  97   callback.Run(response, data);
  98 }
  99
 100 void FetchManifest(blink::WebView* view, const GURL& url,
 101                    const FetchManifestCallback& callback) {
 102   ManifestFetcher* fetcher = new ManifestFetcher(url);
 103   scoped_ptr<ManifestFetcher> autodeleter(fetcher);
 104
 105   // Start is called on fetcher which is also bound to the callback.
 106   // A raw pointer is used instead of a scoped_ptr as base::Passes passes
 107   // ownership and thus nulls the scoped_ptr. On MSVS this happens before
 108   // the call to Start, resulting in a crash.
 109   fetcher->Start(view->mainFrame(),
 110                  false,
 111                  base::Bind(&FetchManifestDoneCallback,
 112                             base::Passed(&autodeleter),
 113                             callback));
 114 }
 115
 116 void SetMockGamepadProvider(scoped_ptr<RendererGamepadProvider> provider) {
 117   RenderThreadImpl::current()
 118       ->blink_platform_impl()
 119       ->SetPlatformEventObserverForTesting(
 120           blink::WebPlatformEventGamepad,
 121           provider.Pass());
 122 }
 123
 124 void SetMockDeviceLightData(const double data) {
 125   RendererBlinkPlatformImpl::SetMockDeviceLightDataForTesting(data);
 126 }
 127
 128 void SetMockDeviceMotionData(const WebDeviceMotionData& data) {
 129   RendererBlinkPlatformImpl::SetMockDeviceMotionDataForTesting(data);
 130 }
 131
 132 void SetMockDeviceOrientationData(const WebDeviceOrientationData& data) {
 133   RendererBlinkPlatformImpl::SetMockDeviceOrientationDataForTesting(data);
 134 }
 135
 136 void MockBatteryStatusChanged(const WebBatteryStatus& status) {
 137   RenderThreadImpl::current()
 138       ->blink_platform_impl()
 139       ->MockBatteryStatusChangedForTesting(status);
 140 }
 141
 142 void EnableRendererLayoutTestMode() {
 143   RenderThreadImpl::current()->set_layout_test_mode(true);
 144 }
 145
 146 void EnableBrowserLayoutTestMode() {
 147 #if defined(OS_MACOSX)
 148   ImageTransportSurface::SetAllowOSMesaForTesting(true);
 149   PopupMenuHelper::DontShowPopupMenuForTesting();
 150 #endif
 151   RenderWidgetHostImpl::DisableResizeAckCheckForTesting();
 152 }
 153
 154 int GetLocalSessionHistoryLength(RenderView* render_view) {
 155   return static_cast<RenderViewImpl*>(render_view)->
 156       GetLocalSessionHistoryLengthForTesting();
 157 }
 158
 159 void SyncNavigationState(RenderView* render_view) {
 160   static_cast<RenderViewImpl*>(render_view)->SyncNavigationState();
 161 }
 162
 163 void SetFocusAndActivate(RenderView* render_view, bool enable) {
 164   static_cast<RenderViewImpl*>(render_view)->
 165       SetFocusAndActivateForTesting(enable);
 166 }
 167
 168 void ForceResizeRenderView(RenderView* render_view,
 169                            const WebSize& new_size) {
 170   RenderViewImpl* render_view_impl = static_cast<RenderViewImpl*>(render_view);
 171   render_view_impl->ForceResizeForTesting(new_size);
 172 }
 173
 174 void SetDeviceScaleFactor(RenderView* render_view, float factor) {
 175   static_cast<RenderViewImpl*>(render_view)->
 176       SetDeviceScaleFactorForTesting(factor);
 177 }
 178
 179 void SetDeviceColorProfile(RenderView* render_view, const std::string& name) {
 180   if (name == "reset") {
 181     static_cast<RenderViewImpl*>(render_view)->
 182         ResetDeviceColorProfileForTesting();
 183     return;
 184   }
 185
 186   std::vector<char> color_profile;
 187
 188   struct TestColorProfile {
 189     char* data() {
 190       static unsigned char color_profile_data[] = {
 191         0x00,0x00,0x01,0xea,0x54,0x45,0x53,0x54,0x00,0x00,0x00,0x00,
 192         0x6d,0x6e,0x74,0x72,0x52,0x47,0x42,0x20,0x58,0x59,0x5a,0x20,
 193         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 194         0x61,0x63,0x73,0x70,0x74,0x65,0x73,0x74,0x00,0x00,0x00,0x00,
 195         0x74,0x65,0x73,0x74,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 196         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf6,0xd6,
 197         0x00,0x01,0x00,0x00,0x00,0x00,0xd3,0x2d,0x74,0x65,0x73,0x74,
 198         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 199         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 200         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 201         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x09,
 202         0x63,0x70,0x72,0x74,0x00,0x00,0x00,0xf0,0x00,0x00,0x00,0x0d,
 203         0x64,0x65,0x73,0x63,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x8c,
 204         0x77,0x74,0x70,0x74,0x00,0x00,0x01,0x8c,0x00,0x00,0x00,0x14,
 205         0x72,0x58,0x59,0x5a,0x00,0x00,0x01,0xa0,0x00,0x00,0x00,0x14,
 206         0x67,0x58,0x59,0x5a,0x00,0x00,0x01,0xb4,0x00,0x00,0x00,0x14,
 207         0x62,0x58,0x59,0x5a,0x00,0x00,0x01,0xc8,0x00,0x00,0x00,0x14,
 208         0x72,0x54,0x52,0x43,0x00,0x00,0x01,0xdc,0x00,0x00,0x00,0x0e,
 209         0x67,0x54,0x52,0x43,0x00,0x00,0x01,0xdc,0x00,0x00,0x00,0x0e,
 210         0x62,0x54,0x52,0x43,0x00,0x00,0x01,0xdc,0x00,0x00,0x00,0x0e,
 211         0x74,0x65,0x78,0x74,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 212         0x00,0x00,0x00,0x00,0x64,0x65,0x73,0x63,0x00,0x00,0x00,0x00,
 213         0x00,0x00,0x00,0x10,0x77,0x68,0x61,0x63,0x6b,0x65,0x64,0x2e,
 214         0x69,0x63,0x63,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 215         0x00,0x00,0x00,0x11,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 216         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 217         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 218         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 219         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 220         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 221         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 222         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 223         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 224         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0xf3,0x52,
 225         0x00,0x01,0x00,0x00,0x00,0x01,0x16,0xcc,0x58,0x59,0x5a,0x20,
 226         0x00,0x00,0x00,0x00,0x00,0x00,0x34,0x8d,0x00,0x00,0xa0,0x2c,
 227         0x00,0x00,0x0f,0x95,0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,
 228         0x00,0x00,0x26,0x31,0x00,0x00,0x10,0x2f,0x00,0x00,0xbe,0x9b,
 229         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x18,
 230         0x00,0x00,0x4f,0xa5,0x00,0x00,0x04,0xfc,0x63,0x75,0x72,0x76,
 231         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x33
 232       };
 233
 234       return reinterpret_cast<char*>(color_profile_data);
 235     }
 236
 237     size_t size() {
 238       const size_t kTestColorProfileSizeInBytes = 490u;
 239       return kTestColorProfileSizeInBytes;
 240     }
 241   };
 242
 243   struct AdobeRGBColorProfile {
 244     char* data() {
 245       static unsigned char color_profile_data[] = {
 246         0x00,0x00,0x02,0x30,0x41,0x44,0x42,0x45,0x02,0x10,0x00,0x00,
 247         0x6d,0x6e,0x74,0x72,0x52,0x47,0x42,0x20,0x58,0x59,0x5a,0x20,
 248         0x07,0xd0,0x00,0x08,0x00,0x0b,0x00,0x13,0x00,0x33,0x00,0x3b,
 249         0x61,0x63,0x73,0x70,0x41,0x50,0x50,0x4c,0x00,0x00,0x00,0x00,
 250         0x6e,0x6f,0x6e,0x65,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 251         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf6,0xd6,
 252         0x00,0x01,0x00,0x00,0x00,0x00,0xd3,0x2d,0x41,0x44,0x42,0x45,
 253         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 254         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 255         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 256         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0a,
 257         0x63,0x70,0x72,0x74,0x00,0x00,0x00,0xfc,0x00,0x00,0x00,0x32,
 258         0x64,0x65,0x73,0x63,0x00,0x00,0x01,0x30,0x00,0x00,0x00,0x6b,
 259         0x77,0x74,0x70,0x74,0x00,0x00,0x01,0x9c,0x00,0x00,0x00,0x14,
 260         0x62,0x6b,0x70,0x74,0x00,0x00,0x01,0xb0,0x00,0x00,0x00,0x14,
 261         0x72,0x54,0x52,0x43,0x00,0x00,0x01,0xc4,0x00,0x00,0x00,0x0e,
 262         0x67,0x54,0x52,0x43,0x00,0x00,0x01,0xd4,0x00,0x00,0x00,0x0e,
 263         0x62,0x54,0x52,0x43,0x00,0x00,0x01,0xe4,0x00,0x00,0x00,0x0e,
 264         0x72,0x58,0x59,0x5a,0x00,0x00,0x01,0xf4,0x00,0x00,0x00,0x14,
 265         0x67,0x58,0x59,0x5a,0x00,0x00,0x02,0x08,0x00,0x00,0x00,0x14,
 266         0x62,0x58,0x59,0x5a,0x00,0x00,0x02,0x1c,0x00,0x00,0x00,0x14,
 267         0x74,0x65,0x78,0x74,0x00,0x00,0x00,0x00,0x43,0x6f,0x70,0x79,
 268         0x72,0x69,0x67,0x68,0x74,0x20,0x32,0x30,0x30,0x30,0x20,0x41,
 269         0x64,0x6f,0x62,0x65,0x20,0x53,0x79,0x73,0x74,0x65,0x6d,0x73,
 270         0x20,0x49,0x6e,0x63,0x6f,0x72,0x70,0x6f,0x72,0x61,0x74,0x65,
 271         0x64,0x00,0x00,0x00,0x64,0x65,0x73,0x63,0x00,0x00,0x00,0x00,
 272         0x00,0x00,0x00,0x11,0x41,0x64,0x6f,0x62,0x65,0x20,0x52,0x47,
 273         0x42,0x20,0x28,0x31,0x39,0x39,0x38,0x29,0x00,0x00,0x00,0x00,
 274         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 275         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 276         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 277         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 278         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 279         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 280         0x00,0x00,0x00,0x00,0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,
 281         0x00,0x00,0xf3,0x51,0x00,0x01,0x00,0x00,0x00,0x01,0x16,0xcc,
 282         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 283         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x63,0x75,0x72,0x76,
 284         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x33,0x00,0x00,
 285         0x63,0x75,0x72,0x76,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
 286         0x02,0x33,0x00,0x00,0x63,0x75,0x72,0x76,0x00,0x00,0x00,0x00,
 287         0x00,0x00,0x00,0x01,0x02,0x33,0x00,0x00,0x58,0x59,0x5a,0x20,
 288         0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x18,0x00,0x00,0x4f,0xa5,
 289         0x00,0x00,0x04,0xfc,0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,
 290         0x00,0x00,0x34,0x8d,0x00,0x00,0xa0,0x2c,0x00,0x00,0x0f,0x95,
 291         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x26,0x31,
 292         0x00,0x00,0x10,0x2f,0x00,0x00,0xbe,0x9c
 293       };
 294
 295       return reinterpret_cast<char*>(color_profile_data);
 296     }
 297
 298     size_t size() {
 299       const size_t kAdobeRGBColorProfileSizeInBytes = 560u;
 300       return kAdobeRGBColorProfileSizeInBytes;
 301     }
 302   };
 303
 304   if (name == "sRGB") {
 305     color_profile.assign(name.data(), name.data() + name.size());
 306   } else if (name == "test") {
 307     TestColorProfile test;
 308     color_profile.assign(test.data(), test.data() + test.size());
 309   } else if (name == "adobeRGB") {
 310     AdobeRGBColorProfile test;
 311     color_profile.assign(test.data(), test.data() + test.size());
 312   }
 313
 314   static_cast<RenderViewImpl*>(render_view)->
 315       SetDeviceColorProfileForTesting(color_profile);
 316 }
 317
 318 void SetBluetoothAdapter(int render_process_id,
 319                          scoped_refptr<device::BluetoothAdapter> adapter) {
 320   RenderProcessHostImpl* render_process_host_impl =
 321       static_cast<RenderProcessHostImpl*>(
 322           RenderProcessHost::FromID(render_process_id));
 323
 324   BluetoothDispatcherHost* dispatcher_host =
 325       render_process_host_impl->GetBluetoothDispatcherHost();
 326
 327   if (dispatcher_host != NULL)
 328     dispatcher_host->SetBluetoothAdapterForTesting(adapter.Pass());
 329 }
 330
 331 void SetGeofencingMockProvider(bool service_available) {
 332   static_cast<WebGeofencingProviderImpl*>(
 333       RenderThreadImpl::current()->blink_platform_impl()->geofencingProvider())
 334           ->SetMockProvider(service_available);
 335 }
 336
 337 void ClearGeofencingMockProvider() {
 338   static_cast<WebGeofencingProviderImpl*>(
 339       RenderThreadImpl::current()->blink_platform_impl()->geofencingProvider())
 340           ->ClearMockProvider();
 341 }
 342
 343 void SetGeofencingMockPosition(double latitude, double longitude) {
 344   static_cast<WebGeofencingProviderImpl*>(
 345       RenderThreadImpl::current()->blink_platform_impl()->geofencingProvider())
 346           ->SetMockPosition(latitude, longitude);
 347 }
 348
 349 void UseSynchronousResizeMode(RenderView* render_view, bool enable) {
 350   static_cast<RenderViewImpl*>(render_view)->
 351       UseSynchronousResizeModeForTesting(enable);
 352 }
 353
 354 void EnableAutoResizeMode(RenderView* render_view,
 355                           const WebSize& min_size,
 356                           const WebSize& max_size) {
 357   static_cast<RenderViewImpl*>(render_view)->
 358       EnableAutoResizeForTesting(min_size, max_size);
 359 }
 360
 361 void DisableAutoResizeMode(RenderView* render_view, const WebSize& new_size) {
 362   static_cast<RenderViewImpl*>(render_view)->
 363       DisableAutoResizeForTesting(new_size);
 364 }
 365
 366 struct ToLower {
 367   base::char16 operator()(base::char16 c) { return tolower(c); }
 368 };
 369
 370 // Returns True if node1 < node2.
 371 bool HistoryEntryCompareLess(HistoryEntry::HistoryNode* node1,
 372                              HistoryEntry::HistoryNode* node2) {
 373   base::string16 target1 = node1->item().target();
 374   base::string16 target2 = node2->item().target();
 375   std::transform(target1.begin(), target1.end(), target1.begin(), ToLower());
 376   std::transform(target2.begin(), target2.end(), target2.begin(), ToLower());
 377   return target1 < target2;
 378 }
 379
 380 std::string DumpHistoryItem(HistoryEntry::HistoryNode* node,
 381                             int indent,
 382                             bool is_current_index) {
 383   std::string result;
 384
 385   const blink::WebHistoryItem& item = node->item();
 386   if (is_current_index) {
 387     result.append("curr->");
 388     result.append(indent - 6, ' '); // 6 == "curr->".length()
 389   } else {
 390     result.append(indent, ' ');
 391   }
 392
 393   std::string url = NormalizeLayoutTestURL(item.urlString().utf8());
 394   result.append(url);
 395   if (!item.target().isEmpty()) {
 396     result.append(" (in frame \"");
 397     result.append(item.target().utf8());
 398     result.append("\")");
 399   }
 400   result.append("\n");
 401
 402   std::vector<HistoryEntry::HistoryNode*> children = node->children();
 403   if (!children.empty()) {
 404     std::sort(children.begin(), children.end(), HistoryEntryCompareLess);
 405     for (size_t i = 0; i < children.size(); ++i)
 406       result += DumpHistoryItem(children[i], indent + 4, false);
 407   }
 408
 409   return result;
 410 }
 411
 412 std::string DumpBackForwardList(std::vector<PageState>& page_state,
 413                                 size_t current_index) {
 414   std::string result;
 415   result.append("\n============== Back Forward List ==============\n");
 416   for (size_t index = 0; index < page_state.size(); ++index) {
 417     scoped_ptr<HistoryEntry> entry(
 418         PageStateToHistoryEntry(page_state[index]));
 419     result.append(
 420         DumpHistoryItem(entry->root_history_node(),
 421                         8,
 422                         index == current_index));
 423   }
 424   result.append("===============================================\n");
 425   return result;
 426 }
 427
 428 scoped_refptr<cc::TextureLayer> CreateTextureLayerForMailbox(
 429     cc::TextureLayerClient* client) {
 430   return cc::TextureLayer::CreateForMailbox(
 431       cc_blink::WebLayerImpl::LayerSettings(), client);
 432 }
 433
 434 blink::WebLayer* InstantiateWebLayer(scoped_refptr<cc::TextureLayer> layer) {
 435   return new cc_blink::WebLayerImpl(layer);
 436 }
 437
 438 }  // namespace content