Implement vsync notification on Android

content/browser/android/content_view_core_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/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
@@ skipping 339 matching lines @@
 
 void ContentViewCoreImpl::Show() {
   GetWebContents()->WasShown();
 }
 
 void ContentViewCoreImpl::Hide() {
   GetWebContents()->WasHidden();
 }
 
 void ContentViewCoreImpl::OnTabCrashed() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null())
+    return;
+  Java_ContentViewCore_resetVSyncNotification(env, obj.obj());
+
   // if tab_crashed_ is already true, just return. e.g. if two tabs share the
   // render process, this will be called for each tab when the render process
   // crashed. If user reload one tab, a new render process is created. It can be
   // shared by the other tab. But if user closes the tab before reload the other
   // tab, the new render process will be shut down. This will trigger the other
   // tab's OnTabCrashed() called again as two tabs share the same
   // BrowserRenderProcessHost.
   if (tab_crashed_)
     return;
   tab_crashed_ = true;
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
-  if (obj.is_null())
-    return;
   Java_ContentViewCore_onTabCrash(env, obj.obj());
 }
 
 // All positions and sizes are in CSS pixels.
 // Note that viewport_width/height is a best effort based.
 // ContentViewCore has the actual information about the physical viewport size.
 void ContentViewCoreImpl::UpdateFrameInfo(
     const gfx::Vector2dF& scroll_offset,
     float page_scale_factor,
     const gfx::Vector2dF& page_scale_factor_limits,
@@ skipping 308 matching lines @@
 void ContentViewCoreImpl::RemoveLayer(scoped_refptr<cc::Layer> layer) {
   layer->RemoveFromParent();
 }
 
 void ContentViewCoreImpl::LoadUrl(
     NavigationController::LoadURLParams& params) {
   GetWebContents()->GetController().LoadURLWithParams(params);
   tab_crashed_ = false;
 }
 
+void ContentViewCoreImpl::SetVSyncNotificationEnabled(bool enabled) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null())
+    return;
+  Java_ContentViewCore_setVSyncNotificationEnabled(
+      env, obj.obj(), static_cast<jboolean>(enabled));
+}
+
 ui::WindowAndroid* ContentViewCoreImpl::GetWindowAndroid() const {
   // This should never be NULL for Chrome, but will be NULL for WebView.
   DCHECK(window_android_);
   return window_android_;
 }
 
 scoped_refptr<cc::Layer> ContentViewCoreImpl::GetLayer() const {
   return root_layer_.get();
 }
 
@@ skipping 485 matching lines @@
     return;
 
   RenderWidgetHostImpl* host = RenderWidgetHostImpl::From(
       view->GetRenderWidgetHost());
 
   host->UpdateVSyncParameters(
       base::TimeTicks::FromInternalValue(timebase_micros),
       base::TimeDelta::FromMicroseconds(interval_micros));
 }
 
+void ContentViewCoreImpl::OnVSync(JNIEnv* env, jobject /* obj */,
+                                  jlong frame_time_micros) {
+  RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
+  if (!view)
+    return;
+
+  view->SendVSync(base::TimeTicks::FromInternalValue(frame_time_micros));
+}
+
 jboolean ContentViewCoreImpl::PopulateBitmapFromCompositor(JNIEnv* env,
                                                            jobject obj,
                                                            jobject jbitmap) {
   RenderWidgetHostViewAndroid* view = GetRenderWidgetHostViewAndroid();
   if (!view)
     return false;
 
   return view->PopulateBitmapWithContents(jbitmap);
 }
 
@@ skipping 283 matching lines @@
       reinterpret_cast<WebContents*>(native_web_contents),
       reinterpret_cast<ui::WindowAndroid*>(native_window));
   return reinterpret_cast<jint>(view);
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content