discardable_memory: Using mojo IPC to replace Chrome IPC

content/renderer/render_thread_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 56 matching lines @@
 }
 
 namespace cc {
 class BeginFrameSource;
 class ContextProvider;
 class ImageSerializationProcessor;
 class CompositorFrameSink;
 class TaskGraphRunner;
 }
 
+namespace discardable_memory {
+class ClientDiscardableSharedMemoryManager;
+}
+
 namespace gpu {
 class GpuChannelHost;
 }
 
 namespace IPC {
 class MessageFilter;
 }
 
 namespace media {
 class GpuVideoAcceleratorFactories;
@@ skipping 168 matching lines @@
 
   // True if we are running layout tests. This currently disables forwarding
   // various status messages to the console, skips network error pages, and
   // short circuits size update and focus events.
   bool layout_test_mode() const { return !!layout_test_deps_; }
   void set_layout_test_dependencies(
       std::unique_ptr<LayoutTestDependencies> deps) {
     layout_test_deps_ = std::move(deps);
   }
 
+  discardable_memory::ClientDiscardableSharedMemoryManager*
+  discardable_shared_memory_manager() {

[dcheng, 2016/11/25 00:07:08]

It looks like this is only used for testing? It might be nice to add ForTest()
or something to the name.

(Maybe there's no convention of something like that here, but I find it useful
personally to distinguish)

[Peng, 2016/11/25 16:41:53]

Done.

+    return discardable_shared_memory_manager_.get();
+  }
+
   RendererBlinkPlatformImpl* blink_platform_impl() const {
     DCHECK(blink_platform_impl_);
     return blink_platform_impl_.get();
   }
 
   CompositorForwardingMessageFilter* compositor_message_filter() const {
     return compositor_message_filter_.get();
   }
 
   InputHandlerManager* input_handler_manager() const {
@@ skipping 262 matching lines @@
   void ReleaseFreeMemory();
 
   void OnSyncMemoryPressure(
       base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level);
 
   std::unique_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource(
       int routing_id);
 
   void OnRendererInterfaceRequest(mojom::RendererAssociatedRequest request);
 
+  std::unique_ptr<discardable_memory::ClientDiscardableSharedMemoryManager>
+      discardable_shared_memory_manager_;
+
   // These objects live solely on the render thread.
   std::unique_ptr<AppCacheDispatcher> appcache_dispatcher_;
   std::unique_ptr<DomStorageDispatcher> dom_storage_dispatcher_;
   std::unique_ptr<IndexedDBDispatcher> main_thread_indexed_db_dispatcher_;
   std::unique_ptr<blink::scheduler::RendererScheduler> renderer_scheduler_;
   std::unique_ptr<RendererBlinkPlatformImpl> blink_platform_impl_;
   std::unique_ptr<ResourceDispatchThrottler> resource_dispatch_throttler_;
   std::unique_ptr<CacheStorageDispatcher> main_thread_cache_storage_dispatcher_;
   std::unique_ptr<EmbeddedWorkerDispatcher> embedded_worker_dispatcher_;
 
@@ skipping 179 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_