cc: Remove implicit conversions from Rect to RectF in src/cc/.

cc/output/overlay_unittest.cc

Index: cc/output/overlay_unittest.cc
diff --git a/cc/output/overlay_unittest.cc b/cc/output/overlay_unittest.cc
index 1820ad98ade27447069b5eea5099953f93f4cd51..799ea910142050f4dd7df337a7e251981cfa2dee 100644
--- a/cc/output/overlay_unittest.cc
+++ b/cc/output/overlay_unittest.cc
@@ -63,7 +63,7 @@ void SingleOverlayValidator::CheckOverlaySupport(
 
   OverlayCandidate& candidate = surfaces->back();
   if (candidate.display_rect.width() == 64) {
-    EXPECT_EQ(kOverlayBottomRightRect, candidate.display_rect);
+    EXPECT_EQ(gfx::RectF(kOverlayBottomRightRect), candidate.display_rect);
   } else {
     EXPECT_NEAR(kOverlayRect.x(), candidate.display_rect.x(), 0.01f);
     EXPECT_NEAR(kOverlayRect.y(), candidate.display_rect.y(), 0.01f);