Add support for invoking the Windows 8 metro style hung renderer dialog box. The dialog box

chrome/browser/ui/views/hung_renderer_view.cc

Index: chrome/browser/ui/views/hung_renderer_view.cc
===================================================================
--- chrome/browser/ui/views/hung_renderer_view.cc	(revision 147919)
+++ chrome/browser/ui/views/hung_renderer_view.cc	(working copy)
@@ -39,10 +39,6 @@
 #include "ui/aura/window.h"
 #endif
 
-#if defined(OS_WIN)
-#include "chrome/browser/hang_monitor/hang_crash_dump_win.h"
-#endif
-
 HungRendererDialogView* HungRendererDialogView::g_instance_ = NULL;
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -208,7 +204,8 @@
   // Don't show the warning unless the foreground window is the frame, or this
   // window (but still invisible). If the user has another window or
   // application selected, activating ourselves is rude.
-  if (!IsFrameActive(contents))
+  if (!IsFrameActive(contents) &&
+      !platform_util::IsWindowActive(GetWidget()->GetNativeWindow()))
     return;
 
   if (!GetWidget()->IsActive()) {
@@ -306,13 +303,7 @@
     base::ProcessHandle process_handle =
         hung_pages_table_model_->GetRenderProcessHost()->GetHandle();
 
-#if defined(OS_WIN)
-    // Try to generate a crash report for the hung process.
-    CrashDumpAndTerminateHungChildProcess(process_handle);
-#else
-    // Kill the process.
-    base::KillProcess(process_handle, content::RESULT_CODE_HUNG, false);
-#endif
+    KillRendererProcess(process_handle);
   }
 }
 
@@ -336,11 +327,7 @@
 bool HungRendererDialogView::IsFrameActive(WebContents* contents) {
   gfx::NativeView frame_view =
       platform_util::GetTopLevel(contents->GetNativeView());
-  if (!platform_util::IsWindowActive(frame_view) &&
-      !platform_util::IsWindowActive(GetWidget()->GetNativeWindow())) {
-    return false;
-  }
-  return true;
+  return platform_util::IsWindowActive(frame_view);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -449,6 +436,14 @@
   }
 }
 
+#if !defined(OS_WIN)
+// static
+void HungRendererDialogView::KillRendererProcess(
+    base::ProcessHandle process_handle) {
+  base::KillProcess(process_handle, content::RESULT_CODE_HUNG, false);
+}
+#endif  // OS_WIN
+
 namespace chrome {
 
 void ShowHungRendererDialog(WebContents* contents) {