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 "components/test_runner/test_common.h"
  11 #include "components/test_runner/web_frame_test_proxy.h"
  12 #include "components/test_runner/web_test_proxy.h"
  13 #include "content/browser/bluetooth/bluetooth_dispatcher_host.h"
  14 #include "content/browser/renderer_host/render_process_host_impl.h"
  15 #include "content/browser/renderer_host/render_widget_host_impl.h"
  16 #include "content/child/geofencing/web_geofencing_provider_impl.h"
  17 #include "content/common/gpu/image_transport_surface.h"
  18 #include "content/public/common/page_state.h"
  19 #include "content/public/renderer/renderer_gamepad_provider.h"
  20 #include "content/renderer/fetchers/manifest_fetcher.h"
  21 #include "content/renderer/history_entry.h"
  22 #include "content/renderer/history_serialization.h"
  23 #include "content/renderer/render_frame_impl.h"
  24 #include "content/renderer/render_thread_impl.h"
  25 #include "content/renderer/render_view_impl.h"
  26 #include "content/renderer/renderer_blink_platform_impl.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<
  52     base::Callback<void(RenderView*, test_runner::WebTestProxyBase*)>>::Leaky
  53     g_callback = LAZY_INSTANCE_INITIALIZER;
  54
  55 RenderViewImpl* CreateWebTestProxy(CompositorDependencies* compositor_deps,
  56                                    const ViewMsg_New_Params& params) {
  57   typedef test_runner::WebTestProxy<RenderViewImpl, CompositorDependencies*,
  58                                     const ViewMsg_New_Params&> ProxyType;
  59   ProxyType* render_view_proxy = new ProxyType(compositor_deps, params);
  60   if (g_callback == 0)
  61     return render_view_proxy;
  62   g_callback.Get().Run(render_view_proxy, render_view_proxy);
  63   return render_view_proxy;
  64 }
  65
  66 test_runner::WebTestProxyBase* GetWebTestProxyBase(
  67     RenderViewImpl* render_view) {
  68   typedef test_runner::WebTestProxy<RenderViewImpl, const ViewMsg_New_Params&>
  69       ViewProxy;
  70
  71   ViewProxy* render_view_proxy = static_cast<ViewProxy*>(render_view);
  72   return static_cast<test_runner::WebTestProxyBase*>(render_view_proxy);
  73 }
  74
  75 RenderFrameImpl* CreateWebFrameTestProxy(
  76     const RenderFrameImpl::CreateParams& params) {
  77   typedef test_runner::WebFrameTestProxy<
  78       RenderFrameImpl, const RenderFrameImpl::CreateParams&> FrameProxy;
  79
  80   FrameProxy* render_frame_proxy = new FrameProxy(params);
  81   render_frame_proxy->set_base_proxy(GetWebTestProxyBase(params.render_view));
  82
  83   return render_frame_proxy;
  84 }
  85
  86 }  // namespace
  87
  88 void EnableWebTestProxyCreation(
  89     const base::Callback<void(RenderView*, test_runner::WebTestProxyBase*)>&
  90         callback) {
  91   g_callback.Get() = callback;
  92   RenderViewImpl::InstallCreateHook(CreateWebTestProxy);
  93   RenderFrameImpl::InstallCreateHook(CreateWebFrameTestProxy);
  94 }
  95
  96 void FetchManifestDoneCallback(
  97     scoped_ptr<ManifestFetcher> fetcher,
  98     const FetchManifestCallback& callback,
  99     const blink::WebURLResponse& response,
 100     const std::string& data) {
 101   // |fetcher| will be autodeleted here as it is going out of scope.
 102   callback.Run(response, data);
 103 }
 104
 105 void FetchManifest(blink::WebView* view, const GURL& url,
 106                    const FetchManifestCallback& callback) {
 107   ManifestFetcher* fetcher = new ManifestFetcher(url);
 108   scoped_ptr<ManifestFetcher> autodeleter(fetcher);
 109
 110   // Start is called on fetcher which is also bound to the callback.
 111   // A raw pointer is used instead of a scoped_ptr as base::Passes passes
 112   // ownership and thus nulls the scoped_ptr. On MSVS this happens before
 113   // the call to Start, resulting in a crash.
 114   fetcher->Start(view->mainFrame(),
 115                  false,
 116                  base::Bind(&FetchManifestDoneCallback,
 117                             base::Passed(&autodeleter),
 118                             callback));
 119 }
 120
 121 void SetMockGamepadProvider(scoped_ptr<RendererGamepadProvider> provider) {
 122   RenderThreadImpl::current()
 123       ->blink_platform_impl()
 124       ->SetPlatformEventObserverForTesting(
 125           blink::WebPlatformEventGamepad,
 126           provider.Pass());
 127 }
 128
 129 void SetMockDeviceLightData(const double data) {
 130   RendererBlinkPlatformImpl::SetMockDeviceLightDataForTesting(data);
 131 }
 132
 133 void SetMockDeviceMotionData(const WebDeviceMotionData& data) {
 134   RendererBlinkPlatformImpl::SetMockDeviceMotionDataForTesting(data);
 135 }
 136
 137 void SetMockDeviceOrientationData(const WebDeviceOrientationData& data) {
 138   RendererBlinkPlatformImpl::SetMockDeviceOrientationDataForTesting(data);
 139 }
 140
 141 void MockBatteryStatusChanged(const WebBatteryStatus& status) {
 142   RenderThreadImpl::current()
 143       ->blink_platform_impl()
 144       ->MockBatteryStatusChangedForTesting(status);
 145 }
 146
 147 void EnableRendererLayoutTestMode() {
 148   RenderThreadImpl::current()->set_layout_test_mode(true);
 149 }
 150
 151 void EnableBrowserLayoutTestMode() {
 152 #if defined(OS_MACOSX)
 153   ImageTransportSurface::SetAllowOSMesaForTesting(true);
 154   PopupMenuHelper::DontShowPopupMenuForTesting();
 155 #endif
 156   RenderWidgetHostImpl::DisableResizeAckCheckForTesting();
 157 }
 158
 159 int GetLocalSessionHistoryLength(RenderView* render_view) {
 160   return static_cast<RenderViewImpl*>(render_view)->
 161       GetLocalSessionHistoryLengthForTesting();
 162 }
 163
 164 void SyncNavigationState(RenderView* render_view) {
 165   static_cast<RenderViewImpl*>(render_view)->SendUpdateState();
 166 }
 167
 168 void SetFocusAndActivate(RenderView* render_view, bool enable) {
 169   static_cast<RenderViewImpl*>(render_view)->
 170       SetFocusAndActivateForTesting(enable);
 171 }
 172
 173 void ForceResizeRenderView(RenderView* render_view,
 174                            const WebSize& new_size) {
 175   RenderViewImpl* render_view_impl = static_cast<RenderViewImpl*>(render_view);
 176   render_view_impl->ForceResizeForTesting(new_size);
 177 }
 178
 179 void SetDeviceScaleFactor(RenderView* render_view, float factor) {
 180   static_cast<RenderViewImpl*>(render_view)->
 181       SetDeviceScaleFactorForTesting(factor);
 182 }
 183
 184 void SetDeviceColorProfile(RenderView* render_view, const std::string& name) {
 185   if (name == "reset") {
 186     static_cast<RenderViewImpl*>(render_view)->
 187         ResetDeviceColorProfileForTesting();
 188     return;
 189   }
 190
 191   std::vector<char> color_profile;
 192
 193   struct TestColorProfile {
 194     char* data() {
 195       static unsigned char color_profile_data[] = {
 196         0x00,0x00,0x01,0xea,0x54,0x45,0x53,0x54,0x00,0x00,0x00,0x00,
 197         0x6d,0x6e,0x74,0x72,0x52,0x47,0x42,0x20,0x58,0x59,0x5a,0x20,
 198         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 199         0x61,0x63,0x73,0x70,0x74,0x65,0x73,0x74,0x00,0x00,0x00,0x00,
 200         0x74,0x65,0x73,0x74,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 201         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf6,0xd6,
 202         0x00,0x01,0x00,0x00,0x00,0x00,0xd3,0x2d,0x74,0x65,0x73,0x74,
 203         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 204         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 205         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 206         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x09,
 207         0x63,0x70,0x72,0x74,0x00,0x00,0x00,0xf0,0x00,0x00,0x00,0x0d,
 208         0x64,0x65,0x73,0x63,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x8c,
 209         0x77,0x74,0x70,0x74,0x00,0x00,0x01,0x8c,0x00,0x00,0x00,0x14,
 210         0x72,0x58,0x59,0x5a,0x00,0x00,0x01,0xa0,0x00,0x00,0x00,0x14,
 211         0x67,0x58,0x59,0x5a,0x00,0x00,0x01,0xb4,0x00,0x00,0x00,0x14,
 212         0x62,0x58,0x59,0x5a,0x00,0x00,0x01,0xc8,0x00,0x00,0x00,0x14,
 213         0x72,0x54,0x52,0x43,0x00,0x00,0x01,0xdc,0x00,0x00,0x00,0x0e,
 214         0x67,0x54,0x52,0x43,0x00,0x00,0x01,0xdc,0x00,0x00,0x00,0x0e,
 215         0x62,0x54,0x52,0x43,0x00,0x00,0x01,0xdc,0x00,0x00,0x00,0x0e,
 216         0x74,0x65,0x78,0x74,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 217         0x00,0x00,0x00,0x00,0x64,0x65,0x73,0x63,0x00,0x00,0x00,0x00,
 218         0x00,0x00,0x00,0x10,0x77,0x68,0x61,0x63,0x6b,0x65,0x64,0x2e,
 219         0x69,0x63,0x63,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 220         0x00,0x00,0x00,0x11,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 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         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 225         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 226         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 227         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 228         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 229         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0xf3,0x52,
 230         0x00,0x01,0x00,0x00,0x00,0x01,0x16,0xcc,0x58,0x59,0x5a,0x20,
 231         0x00,0x00,0x00,0x00,0x00,0x00,0x34,0x8d,0x00,0x00,0xa0,0x2c,
 232         0x00,0x00,0x0f,0x95,0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,
 233         0x00,0x00,0x26,0x31,0x00,0x00,0x10,0x2f,0x00,0x00,0xbe,0x9b,
 234         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x18,
 235         0x00,0x00,0x4f,0xa5,0x00,0x00,0x04,0xfc,0x63,0x75,0x72,0x76,
 236         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x33
 237       };
 238
 239       return reinterpret_cast<char*>(color_profile_data);
 240     }
 241
 242     size_t size() {
 243       const size_t kTestColorProfileSizeInBytes = 490u;
 244       return kTestColorProfileSizeInBytes;
 245     }
 246   };
 247
 248   struct AdobeRGBColorProfile {
 249     char* data() {
 250       static unsigned char color_profile_data[] = {
 251         0x00,0x00,0x02,0x30,0x41,0x44,0x42,0x45,0x02,0x10,0x00,0x00,
 252         0x6d,0x6e,0x74,0x72,0x52,0x47,0x42,0x20,0x58,0x59,0x5a,0x20,
 253         0x07,0xd0,0x00,0x08,0x00,0x0b,0x00,0x13,0x00,0x33,0x00,0x3b,
 254         0x61,0x63,0x73,0x70,0x41,0x50,0x50,0x4c,0x00,0x00,0x00,0x00,
 255         0x6e,0x6f,0x6e,0x65,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 256         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf6,0xd6,
 257         0x00,0x01,0x00,0x00,0x00,0x00,0xd3,0x2d,0x41,0x44,0x42,0x45,
 258         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 259         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 260         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 261         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0a,
 262         0x63,0x70,0x72,0x74,0x00,0x00,0x00,0xfc,0x00,0x00,0x00,0x32,
 263         0x64,0x65,0x73,0x63,0x00,0x00,0x01,0x30,0x00,0x00,0x00,0x6b,
 264         0x77,0x74,0x70,0x74,0x00,0x00,0x01,0x9c,0x00,0x00,0x00,0x14,
 265         0x62,0x6b,0x70,0x74,0x00,0x00,0x01,0xb0,0x00,0x00,0x00,0x14,
 266         0x72,0x54,0x52,0x43,0x00,0x00,0x01,0xc4,0x00,0x00,0x00,0x0e,
 267         0x67,0x54,0x52,0x43,0x00,0x00,0x01,0xd4,0x00,0x00,0x00,0x0e,
 268         0x62,0x54,0x52,0x43,0x00,0x00,0x01,0xe4,0x00,0x00,0x00,0x0e,
 269         0x72,0x58,0x59,0x5a,0x00,0x00,0x01,0xf4,0x00,0x00,0x00,0x14,
 270         0x67,0x58,0x59,0x5a,0x00,0x00,0x02,0x08,0x00,0x00,0x00,0x14,
 271         0x62,0x58,0x59,0x5a,0x00,0x00,0x02,0x1c,0x00,0x00,0x00,0x14,
 272         0x74,0x65,0x78,0x74,0x00,0x00,0x00,0x00,0x43,0x6f,0x70,0x79,
 273         0x72,0x69,0x67,0x68,0x74,0x20,0x32,0x30,0x30,0x30,0x20,0x41,
 274         0x64,0x6f,0x62,0x65,0x20,0x53,0x79,0x73,0x74,0x65,0x6d,0x73,
 275         0x20,0x49,0x6e,0x63,0x6f,0x72,0x70,0x6f,0x72,0x61,0x74,0x65,
 276         0x64,0x00,0x00,0x00,0x64,0x65,0x73,0x63,0x00,0x00,0x00,0x00,
 277         0x00,0x00,0x00,0x11,0x41,0x64,0x6f,0x62,0x65,0x20,0x52,0x47,
 278         0x42,0x20,0x28,0x31,0x39,0x39,0x38,0x29,0x00,0x00,0x00,0x00,
 279         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 280         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 281         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 282         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 283         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 284         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 285         0x00,0x00,0x00,0x00,0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,
 286         0x00,0x00,0xf3,0x51,0x00,0x01,0x00,0x00,0x00,0x01,0x16,0xcc,
 287         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 288         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x63,0x75,0x72,0x76,
 289         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x33,0x00,0x00,
 290         0x63,0x75,0x72,0x76,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
 291         0x02,0x33,0x00,0x00,0x63,0x75,0x72,0x76,0x00,0x00,0x00,0x00,
 292         0x00,0x00,0x00,0x01,0x02,0x33,0x00,0x00,0x58,0x59,0x5a,0x20,
 293         0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x18,0x00,0x00,0x4f,0xa5,
 294         0x00,0x00,0x04,0xfc,0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,
 295         0x00,0x00,0x34,0x8d,0x00,0x00,0xa0,0x2c,0x00,0x00,0x0f,0x95,
 296         0x58,0x59,0x5a,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x26,0x31,
 297         0x00,0x00,0x10,0x2f,0x00,0x00,0xbe,0x9c
 298       };
 299
 300       return reinterpret_cast<char*>(color_profile_data);
 301     }
 302
 303     size_t size() {
 304       const size_t kAdobeRGBColorProfileSizeInBytes = 560u;
 305       return kAdobeRGBColorProfileSizeInBytes;
 306     }
 307   };
 308
 309   if (name == "sRGB") {
 310     color_profile.assign(name.data(), name.data() + name.size());
 311   } else if (name == "test") {
 312     TestColorProfile test;
 313     color_profile.assign(test.data(), test.data() + test.size());
 314   } else if (name == "adobeRGB") {
 315     AdobeRGBColorProfile test;
 316     color_profile.assign(test.data(), test.data() + test.size());
 317   }
 318
 319   static_cast<RenderViewImpl*>(render_view)->
 320       SetDeviceColorProfileForTesting(color_profile);
 321 }
 322
 323 void SetBluetoothAdapter(int render_process_id,
 324                          scoped_refptr<device::BluetoothAdapter> adapter) {
 325   RenderProcessHostImpl* render_process_host_impl =
 326       static_cast<RenderProcessHostImpl*>(
 327           RenderProcessHost::FromID(render_process_id));
 328
 329   BluetoothDispatcherHost* dispatcher_host =
 330       render_process_host_impl->GetBluetoothDispatcherHost();
 331
 332   if (dispatcher_host != NULL)
 333     dispatcher_host->SetBluetoothAdapterForTesting(adapter.Pass());
 334 }
 335
 336 void SetGeofencingMockProvider(bool service_available) {
 337   static_cast<WebGeofencingProviderImpl*>(
 338       RenderThreadImpl::current()->blink_platform_impl()->geofencingProvider())
 339           ->SetMockProvider(service_available);
 340 }
 341
 342 void ClearGeofencingMockProvider() {
 343   static_cast<WebGeofencingProviderImpl*>(
 344       RenderThreadImpl::current()->blink_platform_impl()->geofencingProvider())
 345           ->ClearMockProvider();
 346 }
 347
 348 void SetGeofencingMockPosition(double latitude, double longitude) {
 349   static_cast<WebGeofencingProviderImpl*>(
 350       RenderThreadImpl::current()->blink_platform_impl()->geofencingProvider())
 351           ->SetMockPosition(latitude, longitude);
 352 }
 353
 354 void UseSynchronousResizeMode(RenderView* render_view, bool enable) {
 355   static_cast<RenderViewImpl*>(render_view)->
 356       UseSynchronousResizeModeForTesting(enable);
 357 }
 358
 359 void EnableAutoResizeMode(RenderView* render_view,
 360                           const WebSize& min_size,
 361                           const WebSize& max_size) {
 362   static_cast<RenderViewImpl*>(render_view)->
 363       EnableAutoResizeForTesting(min_size, max_size);
 364 }
 365
 366 void DisableAutoResizeMode(RenderView* render_view, const WebSize& new_size) {
 367   static_cast<RenderViewImpl*>(render_view)->
 368       DisableAutoResizeForTesting(new_size);
 369 }
 370
 371 struct ToLower {
 372   base::char16 operator()(base::char16 c) { return tolower(c); }
 373 };
 374
 375 // Returns True if node1 < node2.
 376 bool HistoryEntryCompareLess(HistoryEntry::HistoryNode* node1,
 377                              HistoryEntry::HistoryNode* node2) {
 378   base::string16 target1 = node1->item().target();
 379   base::string16 target2 = node2->item().target();
 380   std::transform(target1.begin(), target1.end(), target1.begin(), ToLower());
 381   std::transform(target2.begin(), target2.end(), target2.begin(), ToLower());
 382   return target1 < target2;
 383 }
 384
 385 std::string DumpHistoryItem(HistoryEntry::HistoryNode* node,
 386                             int indent,
 387                             bool is_current_index) {
 388   std::string result;
 389
 390   const blink::WebHistoryItem& item = node->item();
 391   if (is_current_index) {
 392     result.append("curr->");
 393     result.append(indent - 6, ' '); // 6 == "curr->".length()
 394   } else {
 395     result.append(indent, ' ');
 396   }
 397
 398   std::string url =
 399       test_runner::NormalizeLayoutTestURL(item.urlString().utf8());
 400   result.append(url);
 401   if (!item.target().isEmpty()) {
 402     result.append(" (in frame \"");
 403     result.append(item.target().utf8());
 404     result.append("\")");
 405   }
 406   result.append("\n");
 407
 408   std::vector<HistoryEntry::HistoryNode*> children = node->children();
 409   if (!children.empty()) {
 410     std::sort(children.begin(), children.end(), HistoryEntryCompareLess);
 411     for (size_t i = 0; i < children.size(); ++i)
 412       result += DumpHistoryItem(children[i], indent + 4, false);
 413   }
 414
 415   return result;
 416 }
 417
 418 std::string DumpBackForwardList(std::vector<PageState>& page_state,
 419                                 size_t current_index) {
 420   std::string result;
 421   result.append("\n============== Back Forward List ==============\n");
 422   for (size_t index = 0; index < page_state.size(); ++index) {
 423     scoped_ptr<HistoryEntry> entry(
 424         PageStateToHistoryEntry(page_state[index]));
 425     result.append(
 426         DumpHistoryItem(entry->root_history_node(),
 427                         8,
 428                         index == current_index));
 429   }
 430   result.append("===============================================\n");
 431   return result;
 432 }
 433
 434 scoped_refptr<cc::TextureLayer> CreateTextureLayerForMailbox(
 435     cc::TextureLayerClient* client) {
 436   return cc::TextureLayer::CreateForMailbox(
 437       cc_blink::WebLayerImpl::LayerSettings(), client);
 438 }
 439
 440 blink::WebLayer* InstantiateWebLayer(scoped_refptr<cc::TextureLayer> layer) {
 441   return new cc_blink::WebLayerImpl(layer);
 442 }
 443
 444 }  // namespace content