Revert of Android: Free GLHelper context ashmem when it makes sense

content/common/gpu/client/context_provider_command_buffer.cc

 // Copyright (c) 2013 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/context_provider_command_buffer.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
@@ skipping 101 matching lines @@
 
 uint32_t ContextProviderCommandBuffer::GetCopyTextureInternalFormat() {
   if (attributes_.alpha_size > 0)
     return GL_RGBA;
   DCHECK_NE(attributes_.red_size, 0);
   DCHECK_NE(attributes_.green_size, 0);
   DCHECK_NE(attributes_.blue_size, 0);
   return GL_RGB;
 }
 
-void ContextProviderCommandBuffer::FreeUnusedSharedMemory() {
-  if (bind_succeeded_)
-    gles2_impl_->FreeUnusedSharedMemory();
-}
-
 bool ContextProviderCommandBuffer::BindToCurrentThread() {
   // This is called on the thread the context will be used.
   DCHECK(context_thread_checker_.CalledOnValidThread());
 
   if (bind_failed_)
     return false;
   if (bind_succeeded_)
     return true;
 
   // Early outs should report failure.
@@ skipping 202 matching lines @@
 
 void ContextProviderCommandBuffer::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   DCHECK(context_thread_checker_.CalledOnValidThread());
   DCHECK(lost_context_callback_.is_null() ||
          lost_context_callback.is_null());
   lost_context_callback_ = lost_context_callback;
 }
 
 }  // namespace content