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

cc/test/layer_tree_test.cc

Index: cc/test/layer_tree_test.cc
diff --git a/cc/test/layer_tree_test.cc b/cc/test/layer_tree_test.cc
index 5170f85dc98ba0480108adabfdf4a749918f97bf..e865d29ec02b3ce78566ad9365a6078282e59236 100644
--- a/cc/test/layer_tree_test.cc
+++ b/cc/test/layer_tree_test.cc
@@ -22,12 +22,8 @@
 #include "cc/trees/layer_tree_host_impl.h"
 #include "cc/trees/single_thread_proxy.h"
 #include "testing/gmock/include/gmock/gmock.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperation.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
 #include "ui/gfx/size_conversions.h"
 
-using namespace WebKit;
-
 namespace cc {
 
 TestHooks::TestHooks() {
@@ -448,7 +444,7 @@ void LayerTreeTest::RealEndTest() {
         base::Bind(&LayerTreeTest::RealEndTest, main_thread_weak_ptr_));
     return;
   }
-        
+
   MessageLoop::current()->Quit();
 }