Revert of Move gpu memory calculations to Compositor.

content/common/gpu/gpu_memory_manager_client.h

Index: content/common/gpu/gpu_memory_manager_client.h
diff --git a/content/common/gpu/gpu_memory_manager_client.h b/content/common/gpu/gpu_memory_manager_client.h
index ae06053d334db44be364e218de5ccdc5f6532dba..0c6c7d0920ffc3e55ba1b68ee82ddc6ea95e6a3f 100644
--- a/content/common/gpu/gpu_memory_manager_client.h
+++ b/content/common/gpu/gpu_memory_manager_client.h
@@ -30,6 +30,10 @@ class CONTENT_EXPORT GpuMemoryManagerClient {
   // Returns the memory tracker for this stub.
   virtual gpu::gles2::MemoryTracker* GetMemoryTracker() const = 0;
 
+  // Sets buffer usage depending on Memory Allocation
+  virtual void SetMemoryAllocation(
+      const gpu::MemoryAllocation& allocation) = 0;
+
   virtual void SuggestHaveFrontBuffer(bool suggest_have_frontbuffer) = 0;
 
   // Returns in bytes the total amount of GPU memory for the GPU which this