Avoid sending nonempty view size with empty backing size.

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 "base/bind.h"
 #include "base/logging.h"
@@ skipping 290 matching lines @@
   // ContentViewCoreImpl represents the native side of the Java
   // ContentViewCore.  It being NULL means that it is not attached
   // to the View system yet, so we treat this RWHVA as hidden.
   return is_layer_attached_ && content_view_core_;
 }
 
 gfx::Rect RenderWidgetHostViewAndroid::GetViewBounds() const {
   if (!content_view_core_)
     return gfx::Rect();
 
+  // If the backing hasn't been initialized yet, report empty view bounds
+  // as well. Otherwise, we may end up stuck in a white-screen state because
+  // the resize ack is sent after swapbuffers.
+  if (GetPhysicalBackingSize().IsEmpty())
+    return gfx::Rect();
+
   return gfx::Rect(content_view_core_->GetViewportSizeDip());
 }
 
 gfx::Size RenderWidgetHostViewAndroid::GetPhysicalBackingSize() const {
   if (!content_view_core_)
     return gfx::Size();
 
   return content_view_core_->GetPhysicalBackingSize();
 }
 
@@ skipping 419 matching lines @@
 // RenderWidgetHostView, public:
 
 // static
 RenderWidgetHostView*
 RenderWidgetHostView::CreateViewForWidget(RenderWidgetHost* widget) {
   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(widget);
   return new RenderWidgetHostViewAndroid(rwhi, NULL);
 }
 
 } // namespace content