Migrate ProcessesEventRouter to the new task manager

chrome/browser/task_management/providers/web_contents/web_contents_task_provider.cc

Index: chrome/browser/task_management/providers/web_contents/web_contents_task_provider.cc
diff --git a/chrome/browser/task_management/providers/web_contents/web_contents_task_provider.cc b/chrome/browser/task_management/providers/web_contents/web_contents_task_provider.cc
index a80a9e57f18eb43b2ce65924ca100309781e50fb..bed82a8d71e0c264001ec1418aef3b3475b98068 100644
--- a/chrome/browser/task_management/providers/web_contents/web_contents_task_provider.cc
+++ b/chrome/browser/task_management/providers/web_contents/web_contents_task_provider.cc
@@ -15,6 +15,7 @@
 #include "content/public/browser/web_contents_observer.h"
 
 using content::RenderFrameHost;
+using content::RenderWidgetHost;
 using content::SiteInstance;
 using content::WebContents;
 
@@ -52,6 +53,7 @@ class WebContentsEntry : public content::WebContentsObserver {
   void RenderViewReady() override;
   void WebContentsDestroyed() override;
   void RenderProcessGone(base::TerminationStatus status) override;
+  void OnRendererUnresponsive(RenderWidgetHost* render_widget_host) override;
   void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override;
@@ -113,6 +115,10 @@ void WebContentsEntry::ClearAllTasks(bool notify_observer) {
     FramesList& frames_list = pair.second;
     DCHECK(!frames_list.empty());
     RendererTask* task = tasks_by_frames_[frames_list[0]];
+
+    task->set_termination_status(web_contents()->GetCrashedStatus());
+    task->set_termination_error_code(web_contents()->GetCrashedErrorCode());
+
     if (notify_observer)
       provider_->NotifyObserverTaskRemoved(task);
     delete task;
@@ -156,6 +162,15 @@ void WebContentsEntry::RenderProcessGone(base::TerminationStatus status) {
   ClearAllTasks(true);
 }
 
+void WebContentsEntry::OnRendererUnresponsive(
+    RenderWidgetHost* render_widget_host) {
+  auto itr = tasks_by_frames_.find(web_contents()->GetMainFrame());
+  if (itr == tasks_by_frames_.end())
+    return;
+

[ncarter (slow), 2016/02/11 22:16:49]

This function should use the |render_widget_host| parameter, just in case it
gets hooked up for subframes in the meantime. A simple version of this might be
just to add a DCHECK

DCHECK_EQ(render_widget_host->GetProcess(),
web_contents()->GetMainFrame()->GetProcess());

[afakhry, 2016/02/17 02:27:14]

Done.

+  provider_->NotifyObserverTaskUnresponsive(itr->second);
+}
+
 void WebContentsEntry::DidNavigateMainFrame(
     const content::LoadCommittedDetails& details,
     const content::FrameNavigateParams& params) {