cc: Avoid unnecessary destruction of texture update controller.

cc/CCLayerTreeHostTest.cpp

Index: cc/CCLayerTreeHostTest.cpp
diff --git a/cc/CCLayerTreeHostTest.cpp b/cc/CCLayerTreeHostTest.cpp
index eb0ec56b90069ddb086be3a82ec374c7c3b83a87..183091e10e8813546103066218d1eb194b84018c 100644
--- a/cc/CCLayerTreeHostTest.cpp
+++ b/cc/CCLayerTreeHostTest.cpp
@@ -2758,9 +2758,9 @@ public:
     }
     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: