Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/browser/renderer_host/render_widget_host_impl.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 1587 matching lines @@
       NOTIFICATION_RENDER_WIDGET_HOST_DID_UPDATE_BACKING_STORE,
       Source<RenderWidgetHost>(this),
       NotificationService::NoDetails());
 
   // We don't need to update the view if the view is hidden. We must do this
   // early return after the ACK is sent, however, or the renderer will not send
   // us more data.
   if (is_hidden_)
     return;
 
-  // Now paint the view. Watch out: it might be destroyed already.
-  if (view_ && !is_accelerated_compositing_active_) {
-
-    std::vector<ui::LatencyInfo> latency_info;
-    for (size_t i = 0; i < params.latency_info.size(); i++) {
-      ui::LatencyInfo info = params.latency_info[i];
-      AddLatencyInfoComponentIds(&info);
-      latency_info.push_back(info);
-    }
-
-    view_being_painted_ = true;
-    view_->DidUpdateBackingStore(params.scroll_rect, params.scroll_delta,
-                                 params.copy_rects, latency_info);
-    view_->DidReceiveRendererFrame();
-    view_being_painted_ = false;
-  }
-
   // If we got a resize ack, then perhaps we have another resize to send?
   bool is_resize_ack =
       ViewHostMsg_UpdateRect_Flags::is_resize_ack(params.flags);
   if (is_resize_ack)
     WasResized();
 
   // Log the time delta for processing a paint message.
   TimeTicks now = TimeTicks::Now();
   TimeDelta delta = now - update_start;
   UMA_HISTOGRAM_TIMES("MPArch.RWH_DidUpdateBackingStore", delta);
-
-  // Measures the time from receiving the MsgUpdateRect IPC to completing the
-  // DidUpdateBackingStore() method.  On platforms which have asynchronous
-  // painting, such as Linux, this is the sum of MPArch.RWH_OnMsgUpdateRect,
-  // MPArch.RWH_DidUpdateBackingStore, and the time spent asynchronously
-  // waiting for the paint to complete.
-  //
-  // On other platforms, this will be equivalent to MPArch.RWH_OnMsgUpdateRect.
-  delta = now - paint_start;
-  UMA_HISTOGRAM_TIMES("MPArch.RWH_TotalPaintTime", delta);
 }
 
 void RenderWidgetHostImpl::OnQueueSyntheticGesture(
     const SyntheticGesturePacket& gesture_packet) {
   // Only allow untrustworthy gestures if explicitly enabled.
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
           cc::switches::kEnableGpuBenchmarking)) {
     RecordAction(base::UserMetricsAction("BadMessageTerminate_RWH7"));
     GetProcess()->ReceivedBadMessage();
     return;
@@ skipping 699 matching lines @@
   }
 }
 
 SkBitmap::Config RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return SkBitmap::kARGB_8888_Config;
 }
 
 }  // namespace content