Add some optimizations to plugin painting.

The simplest one is to disable blending when the plugin is opaque. The more
complicated one is to bypass webkit painting the background of plugins when we
know the plugin to be always on top and also opaque. The always on top flag is
currently set by a new "Private2" API. Bypassing WebKit makes animations
faster.

This is a re-land of the previous patch with a trivial compilation fix. This
also adds a clip rect to the GetBitmap... function so we can properly handle
plugins in nested iframes with proper clipping.

BUG=none
TEST=none
Original review URL: http://codereview.chromium.org/3421030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@60426 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 14 insertions, 0 deletions

diff --git a/chrome/renderer/pepper_plugin_delegate_impl.h b/chrome/renderer/pepper_plugin_delegate_impl.h
index a5808d5..8bacb44 100644
--- a/chrome/renderer/pepper_plugin_delegate_impl.h
+++ b/chrome/renderer/pepper_plugin_delegate_impl.h
@@ -19,6 +19,10 @@
 class FilePath;
 class RenderView;
 
+namespace gfx {
+class Rect;
+}
+
 namespace pepper {
 class FileIO;
 class PluginInstance;
@@ -29,6 +33,8 @@ class WebFileChooserCompletion;
 struct WebFileChooserParams;
 }
 
+class TransportDIB;
+
 class PepperPluginDelegateImpl
     : public pepper::PluginDelegate,
       public base::SupportsWeakPtr<PepperPluginDelegateImpl> {
@@ -41,6 +47,14 @@ class PepperPluginDelegateImpl
   void ViewInitiatedPaint();
   void ViewFlushedPaint();
 
+  // Called by RenderView to implement the corresponding function in its base
+  // class RenderWidget (see that for more).
+  bool GetBitmapForOptimizedPluginPaint(
+      const gfx::Rect& paint_bounds,
+      TransportDIB** dib,
+      gfx::Rect* location,
+      gfx::Rect* clip);
+
   // Called by RenderView when ViewMsg_AsyncOpenFile_ACK.
   void OnAsyncFileOpened(base::PlatformFileError error_code,
                          base::PlatformFile file,