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

third_party/WebKit/Source/platform/fonts/shaping/RunSegmenterTest.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/fonts/shaping/RunSegmenter.h"
 
 #include <string>
 #include "platform/fonts/OrientationIterator.h"
 #include "platform/wtf/Assertions.h"
 #include "platform/wtf/Vector.h"
@@ skipping 22 matching lines @@
       UScriptCode the_script,
       OrientationIterator::RenderOrientation the_render_orientation,
       FontFallbackPriority the_font_fallback_priority)
       : start(the_start),
         limit(the_limit),
         script(the_script),
         render_orientation(the_render_orientation),
         font_fallback_priority(the_font_fallback_priority) {}
 };
 
-class RunSegmenterTest : public testing::Test {
+class RunSegmenterTest : public ::testing::Test {
  protected:
   void CheckRuns(const Vector<SegmenterTestRun>& runs,
                  FontOrientation orientation) {
     String text(g_empty_string16_bit);
     Vector<SegmenterExpectedRun> expect;
     for (auto& run : runs) {
       unsigned length_before = text.length();
       text.append(String::FromUTF8(run.text.c_str()));
       expect.push_back(SegmenterExpectedRun(length_before, text.length(),
                                             run.script, run.render_orientation,
@@ skipping 180 matching lines @@
   CHECK_RUNS_HORIZONTAL(
       {{"աբգ", USCRIPT_ARMENIAN, OrientationIterator::kOrientationKeep,
         FontFallbackPriority::kText},
        {"αβγ", USCRIPT_GREEK, OrientationIterator::kOrientationKeep,
         FontFallbackPriority::kText},
        {"ԱԲԳ", USCRIPT_ARMENIAN, OrientationIterator::kOrientationKeep,
         FontFallbackPriority::kText}});
 }
 
 }  // namespace blink