[DevTools] Implement Inspector.interstitial events.

BUG=404631

Review URL: https://codereview.chromium.org/493213004

Cr-Commit-Position: refs/heads/master@{#291629}

content/browser/devtools/render_view_devtools_agent_host.cc

@@ -319,6 +319,8 @@ bool RenderViewDevToolsAgentHost::OnMessageReceived(
 }
 
 void RenderViewDevToolsAgentHost::DidAttachInterstitialPage() {
+  overrides_handler_->DidAttachInterstitialPage();
+
   if (!render_view_host_)
     return;
   // The rvh set in AboutToNavigateRenderView turned out to be interstitial.
@@ -331,6 +333,10 @@ void RenderViewDevToolsAgentHost::DidAttachInterstitialPage() {
   ConnectRenderViewHost(web_contents->GetRenderViewHost());
 }
 
+void RenderViewDevToolsAgentHost::DidDetachInterstitialPage() {
+  overrides_handler_->DidDetachInterstitialPage();
+}
+
 void RenderViewDevToolsAgentHost::Observe(int type,
                                           const NotificationSource& source,
                                           const NotificationDetails& details) {

content/browser/devtools/render_view_devtools_agent_host.h

@@ -70,6 +70,7 @@ class CONTENT_EXPORT RenderViewDevToolsAgentHost
                                  RenderFrameHost* render_frame_host) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void DidAttachInterstitialPage() OVERRIDE;
+  virtual void DidDetachInterstitialPage() OVERRIDE;
 
   // NotificationObserver overrides:
   virtual void Observe(int type,

content/browser/devtools/renderer_overrides_handler.cc

@@ -72,7 +72,8 @@ static int kCaptureRetryLimit = 2;
 }  // namespace
 
 RendererOverridesHandler::RendererOverridesHandler()
-    : has_last_compositor_frame_metadata_(false),
+    : page_domain_enabled_(false),
+      has_last_compositor_frame_metadata_(false),
       capture_retry_count_(0),
       touch_emulation_enabled_(false),
       color_picker_enabled_(false),
@@ -99,6 +100,10 @@ RendererOverridesHandler::RendererOverridesHandler()
       base::Bind(
           &RendererOverridesHandler::ClearBrowserCookies,
           base::Unretained(this)));
+  RegisterCommandHandler(
+      devtools::Page::enable::kName,
+      base::Bind(
+          &RendererOverridesHandler::PageEnable, base::Unretained(this)));
   RegisterCommandHandler(
       devtools::Page::disable::kName,
       base::Bind(
@@ -216,6 +221,16 @@ void RendererOverridesHandler::ClearRenderViewHost() {
   ResetColorPickerFrame();
 }
 
+void RendererOverridesHandler::DidAttachInterstitialPage() {
+  if (page_domain_enabled_)
+    SendNotification(devtools::Page::interstitialShown::kName, NULL);
+}
+
+void RendererOverridesHandler::DidDetachInterstitialPage() {
+  if (page_domain_enabled_)
+    SendNotification(devtools::Page::interstitialHidden::kName, NULL);
+}
+
 void RendererOverridesHandler::InnerSwapCompositorFrame() {
   if ((base::TimeTicks::Now() - last_frame_time_).InMilliseconds() <
           kFrameRateThresholdMs) {
@@ -340,10 +355,20 @@ RendererOverridesHandler::ClearBrowserCookies(
 
 // Page agent handlers  -------------------------------------------------------
 
+scoped_refptr<DevToolsProtocol::Response>
+RendererOverridesHandler::PageEnable(
+    scoped_refptr<DevToolsProtocol::Command> command) {
+  page_domain_enabled_ = true;
+  // Fall through to the renderer.
+  return NULL;
+}
+
 scoped_refptr<DevToolsProtocol::Response>
 RendererOverridesHandler::PageDisable(
     scoped_refptr<DevToolsProtocol::Command> command) {
+  page_domain_enabled_ = false;
   OnClientDetached();
+  // Fall through to the renderer.
   return NULL;
 }
 

content/browser/devtools/renderer_overrides_handler.h

@@ -46,6 +46,8 @@ class CONTENT_EXPORT RendererOverridesHandler
   void OnVisibilityChanged(bool visible);
   void SetRenderViewHost(RenderViewHostImpl* host);
   void ClearRenderViewHost();
+  void DidAttachInterstitialPage();
+  void DidDetachInterstitialPage();
 
  private:
   void InnerSwapCompositorFrame();
@@ -64,6 +66,8 @@ class CONTENT_EXPORT RendererOverridesHandler
       scoped_refptr<DevToolsProtocol::Command> command);
 
   // Page domain.
+  scoped_refptr<DevToolsProtocol::Response> PageEnable(
+      scoped_refptr<DevToolsProtocol::Command> command);
   scoped_refptr<DevToolsProtocol::Response> PageDisable(
       scoped_refptr<DevToolsProtocol::Command> command);
   scoped_refptr<DevToolsProtocol::Response> PageHandleJavaScriptDialog(
@@ -122,6 +126,7 @@ class CONTENT_EXPORT RendererOverridesHandler
   void UpdateTouchEventEmulationState();
 
   RenderViewHostImpl* host_;
+  bool page_domain_enabled_;
   scoped_refptr<DevToolsProtocol::Command> screencast_command_;
   bool has_last_compositor_frame_metadata_;
   cc::CompositorFrameMetadata last_compositor_frame_metadata_;