Add display-resolution caching to GPU IDC

cc/test/geometry_test_utils.h

Index: cc/test/geometry_test_utils.h
diff --git a/cc/test/geometry_test_utils.h b/cc/test/geometry_test_utils.h
index 3869ca2bc540fac59dd89200d2e1a260029a2d73..eee215ca14b6ef57e7f4d9f5750a36b67b02458d 100644
--- a/cc/test/geometry_test_utils.h
+++ b/cc/test/geometry_test_utils.h
@@ -67,6 +67,12 @@ namespace cc {
     EXPECT_FLOAT_EQ((expected).height(), (actual).height()); \
   } while (false)
 
+#define EXPECT_SIZE_EQ(expected, actual)               \
+  do {                                                 \
+    EXPECT_EQ((expected).width(), (actual).width());   \
+    EXPECT_EQ((expected).height(), (actual).height()); \
+  } while (false)
+
 // This is a function rather than a macro because when this is included as a
 // macro in bulk, it causes a significant slow-down in compilation time. This
 // problem exists with both gcc and clang, and bugs have been filed at