Be explicit about namespace testing to not mix it with blink::testing

third_party/WebKit/Source/platform/scroll/ScrollableAreaTest.cpp

 // Copyright 2015 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 "platform/scroll/ScrollableArea.h"
 
 #include "platform/graphics/Color.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/scroll/ScrollbarTestSuite.h"
 #include "platform/scroll/ScrollbarTheme.h"
 #include "platform/scroll/ScrollbarThemeMock.h"
 #include "platform/testing/FakeGraphicsLayer.h"
 #include "platform/testing/FakeGraphicsLayerClient.h"
 #include "platform/testing/TestingPlatformSupport.h"
 #include "public/platform/Platform.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 namespace {
 
-using testing::_;
-using testing::Return;
+using ::testing::_;
+using ::testing::Return;
 
 class ScrollbarThemeWithMockInvalidation : public ScrollbarThemeMock {
  public:
   MOCK_CONST_METHOD0(ShouldRepaintAllPartsOnInvalidation, bool());
   MOCK_CONST_METHOD3(InvalidateOnThumbPositionChange,
                      ScrollbarPart(const ScrollbarThemeClient&, float, float));
 };
 
 }  // namespace
 
-using ScrollableAreaTest = testing::Test;
+using ScrollableAreaTest = ::testing::Test;
 
 TEST_F(ScrollableAreaTest, ScrollAnimatorCurrentPositionShouldBeSync) {
   ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
       platform;
 
   MockScrollableArea* scrollable_area =
       MockScrollableArea::Create(ScrollOffset(0, 100));
   scrollable_area->SetScrollOffset(ScrollOffset(0, 10000), kCompositorScroll);
   EXPECT_EQ(100.0,
             scrollable_area->GetScrollAnimator().CurrentOffset().Height());
@@ skipping 216 matching lines @@
       MockScrollableArea::Create(ScrollOffset(100, 100));
   scrollable_area->SetScrollOrigin(IntPoint(20, 30));
   scrollable_area->DidScroll(gfx::ScrollOffset(40, 51));
 
   // After calling didScroll, the new offset should account for scroll origin.
   EXPECT_EQ(20, scrollable_area->ScrollOffsetInt().Width());
   EXPECT_EQ(21, scrollable_area->ScrollOffsetInt().Height());
 }
 
 }  // namespace blink