Disable partial swaps for webview guest renderer until we can figure out how to do that properly.

content/renderer/render_view_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 205 matching lines @@
       const webkit_glue::WebPreferences& webkit_prefs,
       SharedRenderViewCounter* counter,
       int32 routing_id,
       int32 surface_id,
       int64 session_storage_namespace_id,
       const string16& frame_name,
       bool is_renderer_created,
       bool swapped_out,
       int32 next_page_id,
       const WebKit::WebScreenInfo& screen_info,
-      AccessibilityMode accessibility_mode);
+      AccessibilityMode accessibility_mode,
+      bool allow_partial_swap);
 
   // Used by content_layouttest_support to hook into the creation of
   // RenderViewImpls.
   static void InstallCreateHook(
       RenderViewImpl* (*create_render_view_impl)(RenderViewImplParams*));
 
   // Returns the RenderViewImpl containing the given WebView.
   static RenderViewImpl* FromWebView(WebKit::WebView* webview);
 
   // Returns the RenderViewImpl for the given routing ID.
@@ skipping 586 matching lines @@
   virtual ui::TextInputType GetTextInputType() OVERRIDE;
   virtual void GetSelectionBounds(gfx::Rect* start, gfx::Rect* end) OVERRIDE;
   virtual void GetCompositionCharacterBounds(
       std::vector<gfx::Rect>* character_bounds) OVERRIDE;
   virtual bool CanComposeInline() OVERRIDE;
   virtual void DidCommitCompositorFrame() OVERRIDE;
   virtual void InstrumentWillBeginFrame() OVERRIDE;
   virtual void InstrumentDidBeginFrame() OVERRIDE;
   virtual void InstrumentDidCancelFrame() OVERRIDE;
   virtual void InstrumentWillComposite() OVERRIDE;
+  virtual bool AllowPartialSwap() const OVERRIDE;
 
  protected:
   explicit RenderViewImpl(RenderViewImplParams* params);
 
   void Initialize(RenderViewImplParams* params);
 
   // Do not delete directly.  This class is reference counted.
   virtual ~RenderViewImpl();
 
  private:
@@ skipping 720 matching lines @@
 
   // Wraps the |webwidget_| as a MouseLockDispatcher::LockTarget interface.
   scoped_ptr<MouseLockDispatcher::LockTarget> webwidget_mouse_lock_target_;
 
   // State associated with the GetWindowSnapshot function.
   int next_snapshot_id_;
   typedef std::map<int, WindowSnapshotCallback>
       PendingSnapshotMap;
   PendingSnapshotMap pending_snapshots_;
 
+  bool allow_partial_swap_;
+
   // Plugins -------------------------------------------------------------------
 
   // All the currently active plugin delegates for this RenderView; kept so
   // that we can enumerate them to send updates about things like window
   // location or tab focus and visibily. These are non-owning references.
   std::set<WebPluginDelegateProxy*> plugin_delegates_;
 
 #if defined(OS_WIN)
   // The ID of the focused NPAPI plug-in.
   int focused_plugin_id_;
@@ skipping 48 matching lines @@
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_