Add multi-planar functions to GpuMemoryBuffer

gpu/command_buffer/tests/gl_gpu_memory_buffer_unittest.cc

Index: gpu/command_buffer/tests/gl_gpu_memory_buffer_unittest.cc
diff --git a/gpu/command_buffer/tests/gl_gpu_memory_buffer_unittest.cc b/gpu/command_buffer/tests/gl_gpu_memory_buffer_unittest.cc
index 9e37d55bddc5657aeaa874e344b4b2107b38e52d..690656faeb170b62a093d207b107edcb5cdd0565 100644
--- a/gpu/command_buffer/tests/gl_gpu_memory_buffer_unittest.cc
+++ b/gpu/command_buffer/tests/gl_gpu_memory_buffer_unittest.cc
@@ -78,7 +78,11 @@ TEST_F(GpuMemoryBufferTest, Lifecycle) {
       gfx::Size(kImageWidth, kImageHeight), gfx::GpuMemoryBuffer::RGBA_8888));
 
   // Map buffer for writing.
-  uint8* mapped_buffer = static_cast<uint8*>(buffer->Map());
+  void* data;
+  bool map_completed = buffer->Map(&data);

[reveman, 2015/03/24 22:16:53]

nit: map_succeeded? 

[emircan, 2015/03/24 22:45:16]

Changed it to "rv" to be consistent with the rest.

+  DCHECK(map_completed);
+
+  uint8* mapped_buffer = static_cast<uint8*>(data);
   ASSERT_TRUE(mapped_buffer != NULL);
 
   // Assign a value to each pixel.