Kill --memory-metrics and on-demand Memory.Browser/RenderUsed histograms

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 85 matching lines @@
 class CompositorForwardingMessageFilter;
 class ContextProviderCommandBuffer;
 class DBMessageFilter;
 class DevToolsAgentFilter;
 class DomStorageDispatcher;
 class EmbeddedWorkerDispatcher;
 class GpuChannelHost;
 class IndexedDBDispatcher;
 class InputHandlerManager;
 class MediaStreamCenter;
-class MemoryObserver;
 class MidiMessageFilter;
 class NetInfoDispatcher;
 class P2PSocketDispatcher;
 class PeerConnectionDependencyFactory;
 class PeerConnectionTracker;
 class RasterWorkerPool;
 class RenderProcessObserver;
 class RendererBlinkPlatformImpl;
 class RendererDemuxerAndroid;
 class RendererGpuVideoAcceleratorFactories;
@@ skipping 525 matching lines @@
   scoped_ptr<media::AudioHardwareConfig> audio_hardware_config_;
 
   HistogramCustomizer histogram_customizer_;
 
   scoped_ptr<base::MemoryPressureListener> memory_pressure_listener_;
 
 #if defined(ENABLE_WEBRTC)
   scoped_ptr<WebRTCIdentityService> webrtc_identity_service_;
 #endif
 
-  scoped_ptr<MemoryObserver> memory_observer_;
-
   scoped_refptr<base::SingleThreadTaskRunner>
       main_thread_compositor_task_runner_;
 
   // Compositor settings.
   bool is_gpu_rasterization_enabled_;
   bool is_gpu_rasterization_forced_;
   int gpu_rasterization_msaa_sample_count_;
   bool is_lcd_text_enabled_;
   bool is_distance_field_text_enabled_;
   bool is_zero_copy_enabled_;
@@ skipping 42 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_