Fix cpplint errors in cc/(animation|input|layers|trees|test)/

cc/trees/damage_tracker_unittest.cc

 // 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 "cc/trees/damage_tracker.h"
 
 #include "cc/base/math_util.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/geometry_test_utils.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/single_thread_proxy.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperation.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
 #include "third_party/skia/include/effects/SkBlurImageFilter.h"
 #include "ui/gfx/quad_f.h"
 
-using namespace WebKit;
+using WebKit::WebFilterOperation;
+using WebKit::WebFilterOperations;
 
 namespace cc {
 namespace {
 
 void ExecuteCalculateDrawProperties(
     LayerImpl* root,
     std::vector<LayerImpl*>& render_surface_layer_list) {
   int dummy_max_texture_size = 512;
 
   // Sanity check: The test itself should create the root layer's render
@@ skipping 1313 matching lines @@
   // Damage should remain empty even after one frame, since there's yet no new
   // damage.
   EmulateDrawingOneFrame(root.get());
   root_damage_rect =
           root->render_surface()->damage_tracker()->current_damage_rect();
   EXPECT_TRUE(root_damage_rect.IsEmpty());
 }
 
 }  // namespace
 }  // namespace cc