Replace IPC messages in layout_test_render_frame_observer.

content/shell/browser/layout_test/blink_test_controller.h

Index: content/shell/browser/layout_test/blink_test_controller.h
diff --git a/content/shell/browser/layout_test/blink_test_controller.h b/content/shell/browser/layout_test/blink_test_controller.h
index 2d7f699051aebf07dc3e91bfe53b4ac646876e91..fc7ced6ea5fe93cd89f0baafd311e8505b362379 100644
--- a/content/shell/browser/layout_test/blink_test_controller.h
+++ b/content/shell/browser/layout_test/blink_test_controller.h
@@ -27,6 +27,7 @@
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/web_preferences.h"
 #include "content/shell/common/leak_detection_result.h"
+#include "content/shell/common/shell.mojom.h"
 #include "ui/gfx/geometry/size.h"
 
 #if defined(OS_ANDROID)
@@ -215,6 +216,7 @@ class BlinkTestController : public base::NonThreadSafe,
   void OnGetBluetoothManualChooserEvents();
   void OnSendBluetoothManualChooserEvent(const std::string& event,
                                          const std::string& argument);
+  const mojom::ShellViewAssociatedPtr& GetShellViewPtr(RenderFrameHost* frame);

[tibell, 2017/01/19 00:29:54]

This could probably return a mojom::ShellView* instead (just call get() on the
AssociatedPtr). Won't change anything on the caller side, but hides some
implementation details.

[Jia, 2017/01/20 01:52:14]

Done.

 
   std::unique_ptr<BlinkTestResultPrinter> printer_;
 
@@ -278,6 +280,8 @@ class BlinkTestController : public base::NonThreadSafe,
   // renderer created while test is in progress).
   base::DictionaryValue accumulated_layout_test_runtime_flags_changes_;
 
+  // Map from one frame to one mojo pipe.
+  std::map<RenderFrameHost*, mojom::ShellViewAssociatedPtr> shellview_map_;
 #if defined(OS_ANDROID)
   // Because of the nested message pump implementation, Android needs to allow
   // waiting on the UI thread while layout tests are being ran.