Allow DrawingBuffer to present to a bitmap.

public/platform/WebExternalBitmap.h

Index: public/platform/WebExternalBitmap.h
diff --git a/public/webpage/WebMediaSource.h b/public/platform/WebExternalBitmap.h
similarity index 86%
copy from public/webpage/WebMediaSource.h
copy to public/platform/WebExternalBitmap.h
index 424a687dfa381049240e769de9e23f58da6eb576..f1fddc5a05e422fb42a9817269b5a37b42a78038 100644
--- a/public/webpage/WebMediaSource.h
+++ b/public/platform/WebExternalBitmap.h
@@ -28,22 +28,20 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebMediaSource_h
-#define WebMediaSource_h
+#ifndef WebExternalBitmap_h
+#define WebExternalBitmap_h
 
-#include "../platform/WebURL.h"
-#include "WebTimeRange.h"
+#include "WebSize.h"
 
 namespace WebKit {
 
-class WebMediaSourceClient;
-
-class WebMediaSource {
+class WebExternalBitmap {
 public:
-    virtual ~WebMediaSource() { };
-    virtual void open(WebMediaSourceClient*) = 0;
+    virtual WebSize getSize() = 0;
+    virtual void setSize(WebSize) = 0;

[Ken Russell (switch to Gerrit), 2013/07/02 11:22:12]

Probably should document that this invalidates any cached copies of the pointer.

[jbauman, 2013/07/02 19:43:32]

Ok.

+    virtual void* getPointer() = 0;

[Ken Russell (switch to Gerrit), 2013/07/02 11:22:12]

Would it be better to have lock/unlock semantics for access to the pointer, like
SkBitmap's lockPixels/unlockPixels?

[jbauman, 2013/07/02 19:43:32]

No, unlock wouldn't do anything, so that would just be confusing.

 };
 
 } // namespace WebKit
 
-#endif
+#endif // WebExternalBitmap_h