Cleanup duplicated namespace in AnimationTranslationUtil

Source/core/animation/AnimationTranslationUtilTest.cpp

Index: Source/core/animation/AnimationTranslationUtilTest.cpp
diff --git a/Source/core/animation/AnimationTranslationUtilTest.cpp b/Source/core/animation/AnimationTranslationUtilTest.cpp
index 06531ec272e2f7e2cc5123ca53cd7155329241d2..467298bd1b64fe1f7d58ffad17d05fb25413ca98 100644
--- a/Source/core/animation/AnimationTranslationUtilTest.cpp
+++ b/Source/core/animation/AnimationTranslationUtilTest.cpp
@@ -43,11 +43,10 @@
 #include <gtest/gtest.h>
 
 using namespace blink;
-using namespace blink;
 
 namespace {
 
-class WebTransformOperationsMock : public blink::WebTransformOperations {
+class WebTransformOperationsMock : public WebTransformOperations {
 public:
     MOCK_CONST_METHOD1(canBlendWith, bool(const WebTransformOperations&));
     MOCK_METHOD3(appendTranslate, void(double, double, double));
@@ -60,7 +59,7 @@ public:
     MOCK_CONST_METHOD0(isIdentity, bool());
 };
 
-class WebFilterOperationsMock : public blink::WebFilterOperations {
+class WebFilterOperationsMock : public WebFilterOperations {
 public:
     MOCK_METHOD1(appendGrayscaleFilter, void(float));
     MOCK_METHOD1(appendSepiaFilter, void(float));