Fix unit test style in Source/platform/, part 1.

Source/platform/geometry/FloatRoundedRectTest.cpp

Index: Source/platform/geometry/FloatRoundedRectTest.cpp
diff --git a/Source/platform/geometry/FloatRoundedRectTest.cpp b/Source/platform/geometry/FloatRoundedRectTest.cpp
index 22ae1c2ebde2236d55cb290658c1d70721ed76f3..714b66e6d21f54737ef534304b466bc6790e8739 100644
--- a/Source/platform/geometry/FloatRoundedRectTest.cpp
+++ b/Source/platform/geometry/FloatRoundedRectTest.cpp
@@ -28,13 +28,10 @@
  */
 
 #include "config.h"
-
 #include "platform/geometry/FloatRoundedRect.h"
 
 #include <gtest/gtest.h>
 
-using namespace blink;
-
 namespace blink {
 
 void PrintTo(const FloatSize& size, std::ostream* os)
@@ -69,10 +66,6 @@ void PrintTo(const FloatRoundedRect& roundedRect, std::ostream* os)
         << ::testing::PrintToString(roundedRect.radii()) << ")";
 }
 
-} // namespace blink
-
-namespace {
-
 #define TEST_INTERCEPTS(roundedRect, yCoordinate, expectedMinXIntercept, expectedMaxXIntercept) \
 {                                                                                               \
     float minXIntercept;                                                                        \
@@ -213,5 +206,5 @@ TEST(FloatRoundedRectTest, radiusCenterRect)
     EXPECT_TRUE(r2.radiusCenterRect().isEmpty());
 }
 
-} // namespace
+} // namespace blink