Provide gtest printers for ui/gfx geometry types

ui/gfx/test/gfx_util.h

Index: ui/gfx/test/gfx_util.h
diff --git a/ui/gfx/test/gfx_util.h b/ui/gfx/test/gfx_util.h
index 999322ad4ee811dfd79dc57375a5fa5a0e5becef..f5e9d9d0f8942f97b8553dba155deff2609d7f18 100644
--- a/ui/gfx/test/gfx_util.h
+++ b/ui/gfx/test/gfx_util.h
@@ -11,7 +11,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/box_f.h"
-
+#include "ui/gfx/geometry/rect_f.h"
 
 namespace gfx {
 
@@ -24,6 +24,14 @@ namespace gfx {
                                                const BoxF& lhs,
                                                const BoxF& rhs);
 
+#define EXPECT_RECTF_EQ(a, b) \
+  EXPECT_PRED_FORMAT2(::gfx::AssertRectFloatEqual, a, b)
+
+::testing::AssertionResult AssertRectFloatEqual(const char* lhs_expr,
+                                                const char* rhs_expr,
+                                                const RectF& lhs,
+                                                const RectF& rhs);
+
 #define EXPECT_SKCOLOR_EQ(a, b) \
   EXPECT_PRED_FORMAT2(::gfx::AssertSkColorsEqual, a, b)