cc: Avoid unnecessary destruction of texture update controller.

cc/CCLayerTreeHostTest.cpp

 // Copyright 2011 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 "CCLayerTreeHost.h"
 
 #include "CCGeometryTestUtils.h"
 #include "CCGraphicsContext.h"
@@ skipping 2740 matching lines @@
     virtual void endQueryEXT(GC3Denum)
     {
         // Lose context.
         if (!m_isContextLost) {
             m_contextLostCallback->onContextLost();
             m_isContextLost = true;
         }
     }
     virtual void getQueryObjectuivEXT(WebGLId, GC3Denum pname, GC3Duint* params)
     {
-        // Context is lost. Result will never be available.
+        // Context is lost. We need to behave as if result is available.
         if (pname == Extensions3DChromium::QUERY_RESULT_AVAILABLE_EXT)
-            *params = 0;
+            *params = 1;
     }
 
 private:
     explicit CompositorFakeWebGraphicsContext3DWithEndQueryCausingLostContext(Attributes attrs)
         : CompositorFakeWebGraphicsContext3D(attrs)
         , m_contextLostCallback(0)
         , m_isContextLost(false) { }
 
     WebGraphicsContextLostCallback* m_contextLostCallback;
     bool m_isContextLost;
@@ skipping 216 matching lines @@
     int m_numCommitComplete;
     int m_numDrawLayers;
 };
 
 TEST_F(CCLayerTreeHostTestContinuousAnimate, runMultiThread)
 {
     runTest(true);
 }
 
 } // namespace