Remove redundant String casts in tests

third_party/WebKit/Source/platform/geometry/IntRectTest.cpp

Index: third_party/WebKit/Source/platform/geometry/IntRectTest.cpp
diff --git a/third_party/WebKit/Source/platform/geometry/IntRectTest.cpp b/third_party/WebKit/Source/platform/geometry/IntRectTest.cpp
index ac1d46685e9fed5a5168f82aeaf3a545b3588027..1515d7867d06f3fd2c9b5465626ed64c61bdf1bb 100644
--- a/third_party/WebKit/Source/platform/geometry/IntRectTest.cpp
+++ b/third_party/WebKit/Source/platform/geometry/IntRectTest.cpp
@@ -12,10 +12,10 @@ namespace blink {
 TEST(IntRectTest, ToString)
 {
     IntRect emptyRect = IntRect();
-    EXPECT_EQ(String("0,0 0x0"), emptyRect.toString());
+    EXPECT_EQ("0,0 0x0", emptyRect.toString());
 
     IntRect rect(1, 2, 3, 4);
-    EXPECT_EQ(String("1,2 3x4"), rect.toString());
+    EXPECT_EQ("1,2 3x4", rect.toString());
 }
 
 } // namespace blink