Revert 119977 - Defer render_widget draw until host window is available

content/renderer/render_view_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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 4477 matching lines @@
        plugin_it != plugin_delegates_.end(); ++plugin_it) {
     (*plugin_it)->SetContainerVisibility(true);
   }
 #endif  // OS_MACOSX
 }
 
 bool RenderViewImpl::SupportsAsynchronousSwapBuffers() {
   if (WebWidgetHandlesCompositorScheduling())
     return false;
 
-  if (queried_for_swapbuffers_complete_callback_)
-    return context_has_swapbuffers_complete_callback_;
-
-  queried_for_swapbuffers_complete_callback_ = true;
-
   WebKit::WebGraphicsContext3D* context = webview()->graphicsContext3D();
-  if (context) {
-    context->makeContextCurrent();
-    std::string extensions(context->getRequestableExtensionsCHROMIUM().utf8());
-    context_has_swapbuffers_complete_callback_ =
-        extensions.find("GL_CHROMIUM_swapbuffers_complete_callback")
-            != std::string::npos;
-  }
-
-  return context_has_swapbuffers_complete_callback_;
+  if (!context)
+    return false;
+  std::string extensions(context->getRequestableExtensionsCHROMIUM().utf8());
+  return extensions.find("GL_CHROMIUM_swapbuffers_complete_callback") !=
+      std::string::npos;
 }
 
 void RenderViewImpl::OnSetFocus(bool enable) {
   RenderWidget::OnSetFocus(enable);
 
   if (webview() && webview()->isActive()) {
     // Notify all NPAPI plugins.
     std::set<WebPluginDelegateProxy*>::iterator plugin_it;
     for (plugin_it = plugin_delegates_.begin();
          plugin_it != plugin_delegates_.end(); ++plugin_it) {
@@ skipping 434 matching lines @@
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit() {
   DCHECK(!java_bridge_dispatcher_.get());
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_.reset(new JavaBridgeDispatcher(this));
 #endif
 }