Send vsync timebase updates to the browser compositor

cc/gl_renderer.cc

 // Copyright 2010 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 "config.h"
 
 #include "CCRendererGL.h"
 
 #include "CCDamageTracker.h"
 #include "CCLayerQuad.h"
@@ skipping 89 matching lines @@
         m_capabilities.usingAcceleratedPainting = true;
     else
         m_capabilities.usingAcceleratedPainting = false;
 
 
     m_capabilities.contextHasCachedFrontBuffer = extensions.count("GL_CHROMIUM_front_buffer_cached");
 
     m_capabilities.usingPartialSwap = CCSettings::partialSwapEnabled() && extensions.count("GL_CHROMIUM_post_sub_buffer");
 
     // Use the swapBuffers callback only with the threaded proxy.
-    if (CCProxy::hasImplThread())
+    if (CCProxy::hasImplThread()) {
         m_capabilities.usingSwapCompleteCallback = extensions.count("GL_CHROMIUM_swapbuffers_complete_callback");
+        m_context->setUpdateVSyncTimeCallbackCHROMIUM(this);
+    }
     if (m_capabilities.usingSwapCompleteCallback)
         m_context->setSwapBuffersCompleteCallbackCHROMIUM(this);
 
     m_capabilities.usingSetVisibility = extensions.count("GL_CHROMIUM_set_visibility");
 
     if (extensions.count("GL_CHROMIUM_iosurface"))
         ASSERT(extensions.count("GL_ARB_texture_rectangle"));
 
     m_capabilities.usingGpuMemoryManager = extensions.count("GL_CHROMIUM_gpu_memory_manager");
     if (m_capabilities.usingGpuMemoryManager)
@@ skipping 980 matching lines @@
     if (!m_isFramebufferDiscarded)
         return;
 
     if (!m_capabilities.usingDiscardFramebuffer)
         return;
 
     m_context->ensureFramebufferCHROMIUM();
     m_isFramebufferDiscarded = false;
 }
 
+void CCRendererGL::onUpdateVSyncTime(int64 time)
+{
+    m_client->onUpdateVSyncTime(time);
+}
+
 void CCRendererGL::onContextLost()
 {
     m_client->didLoseContext();
 }
 
 
 void CCRendererGL::getFramebufferPixels(void *pixels, const IntRect& rect)
 {
     ASSERT(rect.maxX() <= viewportWidth() && rect.maxY() <= viewportHeight());
 
@@ skipping 392 matching lines @@
 
     releaseRenderPassTextures();
 }
 
 bool CCRendererGL::isContextLost()
 {
     return (m_context->getGraphicsResetStatusARB() != GraphicsContext3D::NO_ERROR);
 }
 
 } // namespace cc