Color: Add SetColorSpace member to gfx::GpuMemoryBuffer

ui/gfx/gpu_memory_buffer.h

Index: ui/gfx/gpu_memory_buffer.h
diff --git a/ui/gfx/gpu_memory_buffer.h b/ui/gfx/gpu_memory_buffer.h
index a6163afd0737f8feddda14faf834d6d8621450cf..df5d7b54c2ffb14eaf2854ad45fd94e27ea42e6e 100644
--- a/ui/gfx/gpu_memory_buffer.h
+++ b/ui/gfx/gpu_memory_buffer.h
@@ -26,6 +26,8 @@ extern "C" typedef struct _ClientBuffer* ClientBuffer;
 
 namespace gfx {
 
+class ColorSpace;
+
 enum GpuMemoryBufferType {
   EMPTY_BUFFER,
   SHARED_MEMORY_BUFFER,
@@ -89,6 +91,10 @@ class GFX_EXPORT GpuMemoryBuffer {
   // plane K is stored at index K-1 of the |stride| array.
   virtual int stride(size_t plane) const = 0;
 
+  // Set the color space in which this buffer should be interpreted when used
+  // for scanout. Note that this will not impact texturing from the buffer.
+  virtual void SetColorSpaceForScanout(const gfx::ColorSpace& color_space);
+
   // Returns a unique identifier associated with buffer.
   virtual GpuMemoryBufferId GetId() const = 0;