Implement shareResources==true in TestWebGraphicsContext3D

cc/trees/layer_tree_host_unittest.cc

Index: cc/trees/layer_tree_host_unittest.cc
diff --git a/cc/trees/layer_tree_host_unittest.cc b/cc/trees/layer_tree_host_unittest.cc
index b6a7806860d7bed498eebd8588e5214d09499669..fa91ef77cd01bb18274df46d70fe22055caaf4d6 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -3045,7 +3045,7 @@ class LayerTreeHostTestDeferredInitialize : public LayerTreeHostTest {
 
   virtual scoped_ptr<OutputSurface> CreateOutputSurface() OVERRIDE {
     scoped_ptr<TestWebGraphicsContext3D> context3d(
-        TestWebGraphicsContext3D::Create());
+        TestWebGraphicsContext3D::CreateShared());
     context3d->set_support_swapbuffers_complete_callback(false);
 
     return FakeOutputSurface::CreateDeferredGL(
@@ -3085,7 +3085,7 @@ class LayerTreeHostTestDeferredInitialize : public LayerTreeHostTest {
     EXPECT_TRUE(static_cast<FakeOutputSurface*>(host_impl->output_surface())
                     ->SetAndInitializeContext3D(
                           scoped_ptr<WebKit::WebGraphicsContext3D>(
-                              TestWebGraphicsContext3D::Create())));
+                              TestWebGraphicsContext3D::CreateShared())));
     did_initialize_gl_ = true;
   }