content: Cleanup GpuMemoryBuffer allocation.

content/common/gpu/client/gpu_memory_buffer_impl.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl.cc b/content/common/gpu/client/gpu_memory_buffer_impl.cc
index a1e539ff366b770231bfdd9a31355eb7d4bee1a1..b3cd98332b41d82eecec0e17434bfb01d865a78d 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl.cc
@@ -8,7 +8,7 @@
 
 namespace content {
 
-GpuMemoryBufferImpl::GpuMemoryBufferImpl(gfx::Size size,
+GpuMemoryBufferImpl::GpuMemoryBufferImpl(const gfx::Size& size,
                                          unsigned internalformat)
     : size_(size), internalformat_(internalformat), mapped_(false) {
   DCHECK(IsFormatValid(internalformat));
@@ -52,8 +52,4 @@ size_t GpuMemoryBufferImpl::BytesPerPixel(unsigned internalformat) {
 
 bool GpuMemoryBufferImpl::IsMapped() const { return mapped_; }
 
-uint32 GpuMemoryBufferImpl::GetStride() const {
-  return size_.width() * BytesPerPixel(internalformat_);
-}
-
 }  // namespace content