Fix UpdateTilePriorities viewport in Android WebView.

cc/output/gl_renderer_unittest.cc

 // Copyright 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 "cc/output/gl_renderer.h"
 
 #include <set>
 
 #include "cc/base/math_util.h"
 #include "cc/debug/test_web_graphics_context_3d.h"
@@ skipping 140 matching lines @@
     root_render_pass->SetNew(
         render_pass_id, gfx::Rect(), gfx::Rect(), gfx::Transform());
     render_passes_in_draw_order_.push_back(root_render_pass.Pass());
   }
 
   // RendererClient methods.
   virtual gfx::Rect DeviceViewport() const OVERRIDE {
     static gfx::Size fake_size(1, 1);
     return gfx::Rect(fake_size);
   }
+  virtual gfx::Rect DeviceClip() const OVERRIDE {
+    return DeviceViewport();
+  }
   virtual float DeviceScaleFactor() const OVERRIDE {
     return scale_factor_;
   }
   virtual const LayerTreeSettings& Settings() const OVERRIDE {
     static LayerTreeSettings fake_settings;
     return fake_settings;
   }
   virtual void SetFullRootLayerDamage() OVERRIDE {
     set_full_root_layer_damage_count_++;
   }
@@ skipping 1453 matching lines @@
   base::MessageLoop::current()->Run();
 
   // The sync point should have happened.
   EXPECT_EQ(1, sync_point_callback_count);
   EXPECT_EQ(1, other_callback_count);
 }
 #endif  // OS_ANDROID
 
 }  // namespace
 }  // namespace cc