Add begin frame paused to android

content/browser/renderer_host/render_widget_host_view_android.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_view_android.h"
 
 #include <android/bitmap.h>
 
 #include <utility>
 
@@ skipping 1398 matching lines @@
   content_view_core_->RemoveLayer(layer_);
 }
 
 void RenderWidgetHostViewAndroid::RequestVSyncUpdate(uint32_t requests) {
   bool should_request_vsync = !outstanding_vsync_requests_ && requests;
   outstanding_vsync_requests_ |= requests;
 
   // If the host has been hidden, defer vsync requests until it is shown
   // again via |Show()|.
   if (!host_ || host_->is_hidden())
     return;

[no sievers, 2016/06/01 20:12:53]

remove this

[boliu, 2016/06/01 21:07:26]

Done.

 
   // Note that if we're not currently observing the root window, outstanding
   // vsync requests will be pushed if/when we resume observing in
   // |StartObservingRootWindow()|.
   if (observing_root_window_ && should_request_vsync)
     content_view_core_->GetWindowAndroid()->RequestVSyncUpdate();
 }
 
 void RenderWidgetHostViewAndroid::StartObservingRootWindow() {
   DCHECK(content_view_core_);
   // TODO(yusufo): This will need to have a better fallback for cases where
   // setContentViewCore is called with a valid ContentViewCore without a window.
   DCHECK(content_view_core_->GetWindowAndroid());
   DCHECK(is_showing_);
   if (observing_root_window_)
     return;
 
   observing_root_window_ = true;
+  if (host_)
+    host_->Send(new ViewMsg_SetBeginFramePaused(host_->GetRoutingID(), false));
   content_view_core_->GetWindowAndroid()->AddObserver(this);
 
   // Clear existing vsync requests to allow a request to the new window.
   uint32_t outstanding_vsync_requests = outstanding_vsync_requests_;
   outstanding_vsync_requests_ = 0;
   RequestVSyncUpdate(outstanding_vsync_requests);
 }
 
 void RenderWidgetHostViewAndroid::StopObservingRootWindow() {
   if (!content_view_core_ || !(content_view_core_->GetWindowAndroid())) {
     DCHECK(!observing_root_window_);
     return;
   }
 
   if (!observing_root_window_)
     return;
 
   // Reset window state variables to their defaults.
   is_window_activity_started_ = true;
   is_window_visible_ = true;
   observing_root_window_ = false;
+  if (host_)
+    host_->Send(new ViewMsg_SetBeginFramePaused(host_->GetRoutingID(), true));
   content_view_core_->GetWindowAndroid()->RemoveObserver(this);
 }
 
 void RenderWidgetHostViewAndroid::SendBeginFrame(base::TimeTicks frame_time,
                                                  base::TimeDelta vsync_period) {
   TRACE_EVENT1("cc", "RenderWidgetHostViewAndroid::SendBeginFrame",
                "frame_time_us", frame_time.ToInternalValue());
 
   if (using_browser_compositor_) {
     // TODO(brianderson): Replace this hardcoded deadline after Android
@@ skipping 398 matching lines @@
 void RenderWidgetHostViewAndroid::OnDetachCompositor() {
   DCHECK(content_view_core_);
   DCHECK(using_browser_compositor_);
   RunAckCallbacks(cc::SurfaceDrawStatus::DRAW_SKIPPED);
   overscroll_controller_.reset();
 }
 
 void RenderWidgetHostViewAndroid::OnVSync(base::TimeTicks frame_time,
                                           base::TimeDelta vsync_period) {
   TRACE_EVENT0("cc,benchmark", "RenderWidgetHostViewAndroid::OnVSync");
   if (!host_ || host_->is_hidden())

[no sievers, 2016/06/01 20:12:53]

remove "| host_->is_hidden()'

[boliu, 2016/06/01 21:07:26]

Done.

     return;
 
   if (outstanding_vsync_requests_ & FLUSH_INPUT) {
     outstanding_vsync_requests_ &= ~FLUSH_INPUT;
     host_->FlushInput();
   }
 
   if (outstanding_vsync_requests_ & BEGIN_FRAME ||
       outstanding_vsync_requests_ & PERSISTENT_BEGIN_FRAME) {
     outstanding_vsync_requests_ &= ~BEGIN_FRAME;
@@ skipping 158 matching lines @@
     case ui::MotionEvent::ACTION_UP:
     case ui::MotionEvent::ACTION_POINTER_UP:
       UMA_HISTOGRAM_CUSTOM_COUNTS("Event.Latency.OS.TOUCH_RELEASED",
                                   delta.InMicroseconds(), 1, 1000000, 50);
     default:
       return;
   }
 }
 
 }  // namespace content