Introduce WebPluginContainerBase to abstract WebPluginContainerImpl.

third_party/WebKit/Source/web/WebPluginContainerImpl.h

Index: third_party/WebKit/Source/web/WebPluginContainerImpl.h
diff --git a/third_party/WebKit/Source/web/WebPluginContainerImpl.h b/third_party/WebKit/Source/web/WebPluginContainerImpl.h
index ef1ac551dfa4c49f1fb59354fade16e5bc7de3a3..39eb25ba79c3729b1e19a2fd46f4ec527b652619 100644
--- a/third_party/WebKit/Source/web/WebPluginContainerImpl.h
+++ b/third_party/WebKit/Source/web/WebPluginContainerImpl.h
@@ -33,7 +33,7 @@
 #define WebPluginContainerImpl_h
 
 #include "core/dom/ContextLifecycleObserver.h"
-#include "core/plugins/PluginView.h"
+#include "core/exported/WebPluginContainerBase.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/Compiler.h"
 #include "platform/wtf/PassRefPtr.h"
@@ -60,14 +60,7 @@ class WheelEvent;
 struct WebPrintParams;
 struct WebPrintPresetOptions;
 
-class WEB_EXPORT WebPluginContainerImpl final
-    : public GarbageCollectedFinalized<WebPluginContainerImpl>,
-      public PluginView,
-      NON_EXPORTED_BASE(public WebPluginContainer),
-      public ContextClient {
-  USING_GARBAGE_COLLECTED_MIXIN(WebPluginContainerImpl);
-  USING_PRE_FINALIZER(WebPluginContainerImpl, Dispose);
-
+class WEB_EXPORT WebPluginContainerImpl final : public WebPluginContainerBase {
  public:
   static WebPluginContainerImpl* Create(HTMLPlugInElement* element,
                                         WebPlugin* web_plugin) {
@@ -147,34 +140,37 @@ class WEB_EXPORT WebPluginContainerImpl final
   // (which means it controls the layout, number of pages etc).
   // Whether the plugin supports its own paginated print. The other print
   // interface methods are called only if this method returns true.
-  bool SupportsPaginatedPrint() const;
+  bool SupportsPaginatedPrint() const override;
   // If the plugin content should not be scaled to the printable area of
   // the page, then this method should return true.
-  bool IsPrintScalingDisabled() const;
+  bool IsPrintScalingDisabled() const override;
   // Returns true on success and sets the out parameter to the print preset
   // options for the document.
-  bool GetPrintPresetOptionsFromDocument(WebPrintPresetOptions*) const;
+  bool GetPrintPresetOptionsFromDocument(WebPrintPresetOptions*) const override;
   // Sets up printing at the specified WebPrintParams. Returns the number of
   // pages to be printed at these settings.
-  int PrintBegin(const WebPrintParams&) const;
+  int PrintBegin(const WebPrintParams&) const override;
   // Prints the page specified by pageNumber (0-based index) into the supplied
   // canvas.
-  void PrintPage(int page_number, GraphicsContext&, const IntRect& paint_rect);
+  void PrintPage(int page_number,
+                 GraphicsContext&,
+                 const IntRect& paint_rect) override;
   // Ends the print operation.
-  void PrintEnd();
+  void PrintEnd() override;
 
   // Copy the selected text.
   void Copy();
 
   // Pass the edit command to the plugin.
-  bool ExecuteEditCommand(const WebString& name);
-  bool ExecuteEditCommand(const WebString& name, const WebString& value);
+  bool ExecuteEditCommand(const WebString& name) override;
+  bool ExecuteEditCommand(const WebString& name,
+                          const WebString& value) override;
 
   // Resource load events for the plugin's source data:
   void DidReceiveResponse(const ResourceResponse&) override;
   void DidReceiveData(const char* data, int data_length) override;
-  void DidFinishLoading();
-  void DidFailLoading(const ResourceError&);
+  void DidFinishLoading() override;
+  void DidFailLoading(const ResourceError&) override;
 
   DECLARE_VIRTUAL_TRACE();
   void Dispose() override;
@@ -212,7 +208,7 @@ class WEB_EXPORT WebPluginContainerImpl final
 
   void CalculateGeometry(IntRect& window_rect,
                          IntRect& clip_rect,
-                         IntRect& unobscured_rect);
+                         IntRect& unobscured_rect) override;
 
   friend class WebPluginContainerTest;