Removing blink::prefix

Source/platform/geometry/GeometryTestHelpers.h

 // 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.
 
 #ifndef GeometryTestHelpers_h
 #define GeometryTestHelpers_h
 
 #include <gtest/gtest.h>
 
 namespace blink {
 namespace GeometryTest {
 
 bool ApproximatelyEqual(float, float, float testEpsilon);
 ::testing::AssertionResult AssertAlmostEqual(const char* actual_expr, const char* expected_expr, float actual, float expected, float testEpsilon = 1e-6);
 
-}
-}
+} // namespace GeometryTest
+} // namespace blink
 
 #endif