<webview>: Expose transparency API

content/renderer/browser_plugin/browser_plugin.h

 // Copyright 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_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 
 #include "third_party/WebKit/public/web/WebPlugin.h"
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 42 matching lines @@
   void RemoveDOMAttribute(const std::string& attribute_name);
   // Get Browser Plugin's DOM Node attribute |attribute_name|'s value.
   std::string GetDOMAttributeValue(const std::string& attribute_name) const;
   // Checks if the attribute |attribute_name| exists in the DOM.
   bool HasDOMAttribute(const std::string& attribute_name) const;
 
   // Get the name attribute value.
   std::string GetNameAttribute() const;
   // Parse the name attribute value.
   void ParseNameAttribute();
+  // Get the allowtransparency attribute value.
+  bool GetAllowTransparencyAttribute() const;
+  // Parse the allowtransparency attribute.

[alexst (slow to review), 2013/12/02 19:03:24]

Describe this a bit better since this sends an IPC and does some stuff that may
not be expected from the function name.

+  void ParseAllowTransparencyAttribute();
   // Get the src attribute value of the BrowserPlugin instance.
   std::string GetSrcAttribute() const;
   // Parse the src attribute value of the BrowserPlugin instance.
   bool ParseSrcAttribute(std::string* error_message);
   // Get the autosize attribute value.
   bool GetAutoSizeAttribute() const;
   // Parses the autosize attribute value.
   void ParseAutoSizeAttribute();
   // Get the maxheight attribute value.
   int GetMaxHeightAttribute() const;
@@ skipping 55 matching lines @@
   void OnInstanceIDAllocated(int guest_instance_id);
   // Provided that a guest instance ID has been allocated, this method attaches
   // this BrowserPlugin instance to that guest. |extra_params| are parameters
   // passed in by the content embedder to the browser process.
   void Attach(scoped_ptr<base::DictionaryValue> extra_params);
 
   // Notify the plugin about a compositor commit so that frame ACKs could be
   // sent, if needed.
   void DidCommitCompositorFrame();
 
-  // Apply opacity settings on the composited layers in embedder and send a
-  // message to the guest renderer to enable or disable transparent background.
-  void SetContentsOpaque(bool opaque);
-
   // Returns whether a message should be forwarded to BrowserPlugin.
   static bool ShouldForwardToBrowserPlugin(const IPC::Message& message);
 
   // blink::WebPlugin implementation.
   virtual blink::WebPluginContainer* container() const OVERRIDE;
   virtual bool initialize(blink::WebPluginContainer* container) OVERRIDE;
   virtual void destroy() OVERRIDE;
   virtual NPObject* scriptableObject() OVERRIDE;
   virtual struct _NPP* pluginNPP() OVERRIDE;
   virtual bool supportsKeyboardFocus() const OVERRIDE;
@@ skipping 176 matching lines @@
   // Maximum size constraint for autosize.
   gfx::Size max_auto_size_;
   std::string storage_partition_id_;
   bool persist_storage_;
   bool valid_partition_id_;
   int content_window_routing_id_;
   bool plugin_focused_;
   // Tracks the visibility of the browser plugin regardless of the whole
   // embedder RenderView's visibility.
   bool visible_;
-  // Tracks the opacity of the compositing helper's layers and the guest
-  // renderer process.
-  bool opaque_;
 
   WebCursor cursor_;
 
   gfx::Size last_view_size_;
   bool before_first_navigation_;
   bool mouse_locked_;
 
   // BrowserPlugin outlives RenderViewImpl in Chrome Apps and so we need to
   // store the BrowserPlugin's BrowserPluginManager in a member variable to
   // avoid accessing the RenderViewImpl.
@@ skipping 14 matching lines @@
   base::WeakPtrFactory<BrowserPlugin> weak_ptr_factory_;
 
   std::vector<EditCommand> edit_commands_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_