Update GPU memory buffers to use StrideInBytes internally.

content/common/gpu/client/gpu_memory_buffer_impl_unittest.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 "content/common/gpu/client/gpu_memory_buffer_impl.h"
 
 #include "base/bind.h"
 #include "content/common/gpu/gpu_memory_buffer_factory.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 68 matching lines @@
 
 TEST_P(GpuMemoryBufferImplTest, Map) {
   const int kBufferId = 1;
 
   gfx::Size buffer_size(1, 1);
 
   for (auto configuration : supported_configurations_) {
     if (configuration.usage != gfx::GpuMemoryBuffer::MAP)
       continue;
 
-    size_t width_in_bytes =
-        GpuMemoryBufferImpl::BytesPerPixel(configuration.format) *
-        buffer_size.width();
+    size_t width_in_bytes = GpuMemoryBufferImpl::StrideInBytes(
+        buffer_size.width(), configuration.format);
     EXPECT_GT(width_in_bytes, 0u);
     scoped_ptr<char[]> data(new char[width_in_bytes]);
     memset(data.get(), 0x2a, width_in_bytes);
 
     scoped_ptr<GpuMemoryBufferImpl> buffer(
         GpuMemoryBufferImpl::CreateFromHandle(
             CreateGpuMemoryBuffer(kBufferId,
                                   buffer_size,
                                   configuration.format,
                                   configuration.usage),
@@ skipping 23 matching lines @@
   return supported_types;
 }
 
 INSTANTIATE_TEST_CASE_P(
     GpuMemoryBufferImplTests,
     GpuMemoryBufferImplTest,
     ::testing::ValuesIn(GetSupportedGpuMemoryBufferTypes()));
 
 }  // namespace
 }  // namespace content