Change CHROMIUM_image declarations to support multi planar input.

gpu/command_buffer/service/image_factory.h

Index: gpu/command_buffer/service/image_factory.h
diff --git a/gpu/command_buffer/service/image_factory.h b/gpu/command_buffer/service/image_factory.h
index 40dd15a0e611212b5f50f1e71821598b3e47199d..57d319f1ef40420844d741b4dd31db4b7fb20ae8 100644
--- a/gpu/command_buffer/service/image_factory.h
+++ b/gpu/command_buffer/service/image_factory.h
@@ -20,10 +20,15 @@ class GPU_EXPORT ImageFactory {
  public:
   ImageFactory();
 
-  // Returns a valid GpuMemoryBuffer format given a valid internalformat as
-  // defined by CHROMIUM_gpu_memory_buffer_image.
-  static gfx::GpuMemoryBuffer::Format ImageFormatToGpuMemoryBufferFormat(
-      unsigned internalformat);
+  // Returns the number of GpuMemoryBuffers used when given a valid
+  // |internalformat| as defined by CHROMIUM_gpu_memory_buffer_image.
+  static int GpuMemoryBufferCountForImageFormat(unsigned internalformat);
+
+  // Fills a vector of valid GpuMemoryBuffer formats in |formats| when given a
+  // valid |internalformat| as defined by CHROMIUM_gpu_memory_buffer_image.
+  static void ImageFormatToGpuMemoryBufferFormats(

[reveman, 2015/03/04 05:56:00]

How about avoiding the vector and instead add an 'int buffer' argument to the
ImageFormatToGpuMemoryBufferFormat function?

+      unsigned internalformat,
+      std::vector<gfx::GpuMemoryBuffer::Format>* formats);
 
   // Returns a valid GpuMemoryBuffer usage given a valid usage as defined by
   // CHROMIUM_gpu_memory_buffer_image.