Remove content/port directory and move the 3 remaining interfaces to content/public.

content/public/browser/render_widget_host_view.h

Index: content/public/browser/render_widget_host_view.h
===================================================================
--- content/public/browser/render_widget_host_view.h	(revision 268318)
+++ content/public/browser/render_widget_host_view.h	(working copy)
@@ -6,6 +6,7 @@
 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_
 
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ -23,6 +24,7 @@
 namespace content {
 
 class RenderWidgetHost;
+class RenderWidgetHostViewFrameSubscriber;
 
 // RenderWidgetHostView is an interface implemented by an object that acts as
 // the "View" portion of a RenderWidgetHost. The RenderWidgetHost and its
@@ -108,6 +110,16 @@
   // visible viewport.
   virtual void SetInsets(const gfx::Insets& insets) = 0;
 
+  // Begin subscribing for presentation events and captured frames.
+  // |subscriber| is now owned by this object, it will be called only on the
+  // UI thread.
+  virtual void BeginFrameSubscription(
+      scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) = 0;
+
+  // End subscribing for frame presentation events. FrameSubscriber will be
+  // deleted after this call.
+  virtual void EndFrameSubscription() = 0;
+
 #if defined(OS_MACOSX)
   // Set the view's active state (i.e., tint state of controls).
   virtual void SetActive(bool active) = 0;