content: Cleanup GpuMemoryBuffer allocation.

content/common/gpu/client/gpu_memory_buffer_impl_io_surface.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_io_surface.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.cc b/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.cc
index 299bd567ce0c4586e77de7ac3e225fc6b0f31230..74f23879602263b1d6fd391ddf9e854f273d358d 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.cc
@@ -11,7 +11,7 @@
 namespace content {
 
 GpuMemoryBufferImplIOSurface::GpuMemoryBufferImplIOSurface(
-    gfx::Size size,
+    const gfx::Size& size,
     unsigned internalformat)
     : GpuMemoryBufferImpl(size, internalformat),
       io_surface_support_(IOSurfaceSupport::Initialize()) {
@@ -41,7 +41,7 @@ uint32 GpuMemoryBufferImplIOSurface::PixelFormat(unsigned internalformat) {
   }
 }
 
-bool GpuMemoryBufferImplIOSurface::Initialize(
+bool GpuMemoryBufferImplIOSurface::InitializeFromHandle(
     gfx::GpuMemoryBufferHandle handle) {
   io_surface_.reset(io_surface_support_->IOSurfaceLookup(handle.io_surface_id));
   if (!io_surface_) {