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

third_party/WebKit/Source/core/paint/HTMLCanvasPainterTest.cpp

 // Copyright 2016 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 "core/paint/HTMLCanvasPainter.h"
 
 #include "core/frame/LocalFrameView.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/canvas/CanvasContextCreationAttributes.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/loader/EmptyClients.h"
 #include "core/paint/StubChromeClientForSPv2.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/graphics/Canvas2DImageBufferSurface.h"
 #include "platform/graphics/Canvas2DLayerBridge.h"
 #include "platform/graphics/test/FakeGLES2Interface.h"
 #include "platform/graphics/test/FakeWebGraphicsContext3DProvider.h"
 #include "platform/testing/RuntimeEnabledFeaturesTestHelpers.h"
 #include "public/platform/WebLayer.h"
 #include "public/platform/WebSize.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Integration tests of canvas painting code (in SPv2 mode).
 
 namespace blink {
 
 class HTMLCanvasPainterTestForSPv2 : public ::testing::Test,
-                                     public testing::WithParamInterface<bool>,
+                                     public ::testing::WithParamInterface<bool>,
                                      private ScopedSlimmingPaintV2ForTest,
                                      private ScopedRootLayerScrollingForTest {
  public:
   HTMLCanvasPainterTestForSPv2()
       : ScopedSlimmingPaintV2ForTest(true),
         ScopedRootLayerScrollingForTest(GetParam()) {}
 
  protected:
   void SetUp() override {
     chrome_client_ = new StubChromeClientForSPv2();
@@ skipping 52 matching lines @@
 
   // Fetch the layer associated with the <canvas>, and check that it was
   // correctly configured in the layer tree.
   const WebLayer* layer = context->PlatformLayer();
   ASSERT_TRUE(layer);
   EXPECT_TRUE(HasLayerAttached(*layer));
   EXPECT_EQ(WebSize(300, 200), layer->Bounds());
 }
 
 }  // namespace blink