Add renderer memory metrics

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 463 matching lines @@
 
   void RegisterPendingFrameCreate(int routing_id,
                                   mojom::FrameRequest frame,
                                   mojom::FrameHostPtr host);
 
   mojom::StoragePartitionService* GetStoragePartitionService();
 
   // ChildMemoryCoordinatorDelegate implementation.
   void OnTrimMemoryImmediately() override;
 
+  struct RendererMemoryMetrics {
+    size_t partition_alloc_kb;
+    size_t blink_gc_kb;
+    size_t malloc_mb;
+    size_t discardable_kb;
+    size_t v8_main_thread_isolate_mb;
+    size_t total_allocated_mb;
+    size_t non_discardable_total_allocated_mb;
+    size_t total_allocated_per_render_view_mb;
+  };
+  void GetRendererMemoryMetrics(
+      RendererMemoryMetrics* memory_metrics) const;
+
  protected:
   RenderThreadImpl(
       const InProcessChildThreadParams& params,
       std::unique_ptr<blink::scheduler::RendererScheduler> scheduler,
       const scoped_refptr<base::SingleThreadTaskRunner>& resource_task_queue);
   RenderThreadImpl(
       std::unique_ptr<base::MessageLoop> main_message_loop,
       std::unique_ptr<blink::scheduler::RendererScheduler> scheduler);
 
  private:
@@ skipping 265 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_