Add begin frame paused to android

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 47f8f8db5280b30ee0bea3bddf19f69c99830ccc..e565277f72e1ab7423b24f3e0991b367bcd2b92d 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -1413,11 +1413,6 @@ 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;
-
   // Note that if we're not currently observing the root window, outstanding
   // vsync requests will be pushed if/when we resume observing in
   // |StartObservingRootWindow()|.
@@ -1435,6 +1430,8 @@ void RenderWidgetHostViewAndroid::StartObservingRootWindow() {
     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.
@@ -1456,6 +1453,8 @@ void RenderWidgetHostViewAndroid::StopObservingRootWindow() {
   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);
 }
 
@@ -1874,7 +1873,7 @@ void RenderWidgetHostViewAndroid::OnDetachCompositor() {
 void RenderWidgetHostViewAndroid::OnVSync(base::TimeTicks frame_time,
                                           base::TimeDelta vsync_period) {
   TRACE_EVENT0("cc,benchmark", "RenderWidgetHostViewAndroid::OnVSync");
-  if (!host_ || host_->is_hidden())
+  if (!host_)
     return;
 
   if (outstanding_vsync_requests_ & FLUSH_INPUT) {