Adds kind-of-live thumbnail generation for a potential tab switcher. This...

chrome/common/transport_dib.h

Index: chrome/common/transport_dib.h
===================================================================
--- chrome/common/transport_dib.h	(revision 17971)
+++ chrome/common/transport_dib.h	(working copy)
@@ -6,6 +6,7 @@
 #define CHROME_COMMON_TRANSPORT_DIB_H_
 
 #include "base/basictypes.h"
+#include "skia/ext/platform_canvas.h"
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
 #include "base/shared_memory.h"
@@ -84,6 +85,11 @@
   // Map the referenced transport DIB. Returns NULL on failure.
   static TransportDIB* Map(Handle transport_dib);
 
+  // Returns a canvas using the memory of this TransportDIB. The returned
+  // pointer will be owned by the caller. The bitmap will be of the given size,
+  // which should fit inside this memory.
+  skia::PlatformCanvas* GetPlatformCanvas(int w, int h);
+
   // Return a pointer to the shared memory
   void* memory() const;