Revert of Remove a bunch of NPAPI quirks and related support code

content/renderer/npapi/webplugin_delegate_proxy.h

Index: content/renderer/npapi/webplugin_delegate_proxy.h
diff --git a/content/renderer/npapi/webplugin_delegate_proxy.h b/content/renderer/npapi/webplugin_delegate_proxy.h
index d980de850663776ecdd63af609b2f4bcab7f8a8d..9e3643ed22e2b3a065b40fbc8039caa916f07563 100644
--- a/content/renderer/npapi/webplugin_delegate_proxy.h
+++ b/content/renderer/npapi/webplugin_delegate_proxy.h
@@ -80,6 +80,19 @@
   // Informs the plugin that its containing content view has gained or lost
   // first responder status.
   virtual void SetContentAreaFocus(bool has_focus);
+#if defined(OS_WIN)
+  // Informs the plugin that plugin IME has updated its status.
+  virtual void ImeCompositionUpdated(
+      const base::string16& text,
+      const std::vector<int>& clauses,
+      const std::vector<int>& target,
+      int cursor_position,
+      int plugin_id);
+  // Informs the plugin that plugin IME has completed.
+  // If |text| is empty, composition was cancelled.
+  virtual void ImeCompositionCompleted(const base::string16& text,
+                                       int plugin_id);
+#endif
 #if defined(OS_MACOSX)
   // Informs the plugin that its enclosing window has gained or lost focus.
   virtual void SetWindowFocus(bool window_has_focus);
@@ -143,6 +156,11 @@
                                              uint32_t surface_id);
   void OnAcceleratedPluginSwappedIOSurface();
 #endif
+#if defined(OS_WIN)
+  void OnSetWindowlessData(HANDLE modal_loop_pump_messages_event_handle,
+                           gfx::NativeViewId dummy_activation_window);
+  void OnNotifyIMEStatus(const int input_mode, const gfx::Rect& caret_rect);
+#endif
   // Helper function that sends the UpdateGeometry message.
   void SendUpdateGeometry(bool bitmaps_changed);
 
@@ -208,6 +226,9 @@
   bool uses_shared_bitmaps_;
 #if defined(OS_MACOSX)
   bool uses_compositor_;
+#elif defined(OS_WIN)
+  // Used for windowless plugins so that keyboard activation works.
+  gfx::NativeViewId dummy_activation_window_;
 #endif
   scoped_refptr<PluginChannelHost> channel_host_;
   std::string mime_type_;
@@ -221,6 +242,10 @@
 
   // Dummy NPP used to uniquely identify this plugin.
   scoped_ptr<NPP_t> npp_;
+
+  // Event passed in by the plugin process and is used to decide if messages
+  // need to be pumped in the NPP_HandleEvent sync call.
+  scoped_ptr<base::WaitableEvent> modal_loop_pump_messages_event_;
 
   // Bitmap for crashed plugin
   SkBitmap* sad_plugin_;