Add multi-planar functions to GpuMemoryBuffer

cc/test/test_gpu_memory_buffer_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/test/test_gpu_memory_buffer_manager.h"
 
 #include "base/logging.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
 namespace cc {
@@ skipping 31 matching lines @@
 
   // Overridden from gfx::GpuMemoryBuffer:
   void* Map() override {
     DCHECK(!mapped_);
     if (!shared_memory_->Map(StrideInBytes(size_.width(), format_) *
                              size_.height()))
       return NULL;
     mapped_ = true;
     return shared_memory_->memory();
   }
+  void* Map(size_t plane_index) override {
+    CHECK_EQ(plane_index, 0u);
+    return Map();
+  }
   void Unmap() override {
     DCHECK(mapped_);
     shared_memory_->Unmap();
     mapped_ = false;
   }
   bool IsMapped() const override { return mapped_; }
+  size_t GetNumberOfPlanes() const override { return 1; }
   Format GetFormat() const override { return format_; }
   uint32 GetStride() const override {
     return StrideInBytes(size_.width(), format_);
   }
+  uint32 GetStride(size_t plane_index) const override {
+    CHECK_EQ(plane_index, 0u);
+    return GetStride();
+  }
   gfx::GpuMemoryBufferHandle GetHandle() const override {
     gfx::GpuMemoryBufferHandle handle;
     handle.type = gfx::SHARED_MEMORY_BUFFER;
     handle.handle = shared_memory_->handle();
     return handle;
   }
   ClientBuffer AsClientBuffer() override {
     return reinterpret_cast<ClientBuffer>(this);
   }
 
@@ skipping 30 matching lines @@
     ClientBuffer buffer) {
   return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
 }
 
 void TestGpuMemoryBufferManager::SetDestructionSyncPoint(
     gfx::GpuMemoryBuffer* buffer,
     uint32 sync_point) {
 }
 
 }  // namespace cc