DO NOT SUBMIT: Bundle IME-related messages into one for batch edit

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 1013175301a5e7f43c09e9a1479318ea72fde531..75d19de8e46c0a0225f8657a0b70fd7e4c9b47ea 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -181,6 +181,15 @@ class CONTENT_EXPORT RenderWidgetHostImpl : public RenderWidgetHost,
       RenderWidgetHost::InputEventObserver* observer) override;
   void GetScreenInfo(content::ScreenInfo* result) override;
   void HandleCompositorProto(const std::vector<uint8_t>& proto) override;
+  void SendOrBatch(IPC::Message* message) override;
+
+  // Begin batch edit mode.
+  void BeginBatchEdit();
+  // End batch edit mode.
+  void EndBatchEdit();
+  // Deletes the current selection plus the specified number of characters
+  // before and after the selection or caret.
+  void ExtendSelectionAndDelete(size_t before, size_t after);
 
   // Notification that the screen info has changed.
   void NotifyScreenInfoChanged();
@@ -840,6 +849,11 @@ class CONTENT_EXPORT RenderWidgetHostImpl : public RenderWidgetHost,
   std::unique_ptr<device::PowerSaveBlocker> power_save_blocker_;
 #endif
 
+  // Messages that will be sent at once in a batch edit.
+  std::vector<IPC::Message> batch_edit_messages_;
+  // Whether or not we are in the batch edit mode.
+  bool in_ime_batch_edit_;
+
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);