sync compositor: Memory policy async IPC

content/renderer/android/synchronous_compositor_proxy.cc

 // Copyright 2015 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/renderer/android/synchronous_compositor_proxy.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/memory/shared_memory.h"
 #include "content/common/android/sync_compositor_messages.h"
@@ skipping 22 matching lines @@
       begin_frame_source_(begin_frame_source),
       input_handler_proxy_(input_handler_proxy),
       input_handler_(handler),
       use_in_process_zero_copy_software_draw_(
           base::CommandLine::ForCurrentProcess()->HasSwitch(
               switches::kSingleProcess)),
       output_surface_(nullptr),
       inside_receive_(false),
       hardware_draw_reply_(nullptr),
       software_draw_reply_(nullptr),
-      bytes_limit_(0u),
       version_(0u),
       page_scale_factor_(0.f),
       min_page_scale_factor_(0.f),
       max_page_scale_factor_(0.f),
       need_animate_scroll_(false),
       need_invalidate_count_(0u),
       need_begin_frame_(false),
       did_activate_pending_tree_count_(0u) {
   DCHECK(begin_frame_source_);
   DCHECK(input_handler_proxy_);
@@ skipping 14 matching lines @@
   if (output_surface_) {
     output_surface_->SetSyncClient(nullptr);
     output_surface_->SetTreeActivationCallback(base::Closure());
   }
   output_surface_ = output_surface;
   if (output_surface_) {
     output_surface_->SetSyncClient(this);
     output_surface_->SetTreeActivationCallback(
         base::Bind(&SynchronousCompositorProxy::DidActivatePendingTree,
                    base::Unretained(this)));
-    output_surface_->SetMemoryPolicy(bytes_limit_);
   }
 }
 
 void SynchronousCompositorProxy::SetNeedsSynchronousAnimateInput() {
   need_animate_scroll_ = true;
   Invalidate();
 }
 
 void SynchronousCompositorProxy::UpdateRootLayerState(
     const gfx::ScrollOffset& total_scroll_offset,
@@ skipping 315 matching lines @@
 void SynchronousCompositorProxy::DidOverscroll(
     const DidOverscrollParams& did_overscroll_params) {
   SyncCompositorCommonRendererParams params;
   PopulateCommonParams(&params);
   Send(new SyncCompositorHostMsg_OverScroll(routing_id_, params,
                                             did_overscroll_params));
 }
 
 void SynchronousCompositorProxy::ProcessCommonParams(
     const SyncCompositorCommonBrowserParams& common_params) {
-  if (bytes_limit_ != common_params.bytes_limit) {
-    bytes_limit_ = common_params.bytes_limit;
-    if (output_surface_)
-      output_surface_->SetMemoryPolicy(bytes_limit_);
-  }
   if (common_params.update_root_scroll_offset &&
       total_scroll_offset_ != common_params.root_scroll_offset) {
     total_scroll_offset_ = common_params.root_scroll_offset;
     input_handler_proxy_->SynchronouslySetRootScrollOffset(
         total_scroll_offset_);
   }
   begin_frame_source_->SetBeginFrameSourcePaused(
       common_params.begin_frame_source_paused);
 }
 
 }  // namespace content