Make Keyframe use TimeTicks/TimeDelta to represent time instead of double.

cc/test/geometry_test_utils.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TEST_GEOMETRY_TEST_UTILS_H_
 #define CC_TEST_GEOMETRY_TEST_UTILS_H_
 
 namespace gfx {
 class Transform;
 }
@@ skipping 50 matching lines @@
   EXPECT_EQ((expected).x(), (actual).x()); \
   EXPECT_EQ((expected).y(), (actual).y()); \
 } while (false)
 
 #define EXPECT_VECTOR2DF_EQ(expected, actual) \
 do { \
   EXPECT_FLOAT_EQ((expected).x(), (actual).x()); \
   EXPECT_FLOAT_EQ((expected).y(), (actual).y()); \
 } while (false)
 
+#define EXPECT_VECTOR2DF_NEAR(expected, actual, abs_error)  \
+  do {                                                      \
+    EXPECT_NEAR((expected).x(), (actual).x(), (abs_error)); \
+    EXPECT_NEAR((expected).y(), (actual).y(), (abs_error)); \
+  } while (false)
+
 #define EXPECT_FLOAT_ARRAY_EQ(expected, actual, count) \
 do { \
   for (int i = 0; i < count; i++) { \
     EXPECT_FLOAT_EQ((expected)[i], (actual)[i]); \
   } \
 } 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
 // http://llvm.org/bugs/show_bug.cgi?id=13651
 // and http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54337
 void ExpectTransformationMatrixEq(const gfx::Transform& expected,
                                   const gfx::Transform& actual);
 
 #define EXPECT_TRANSFORMATION_MATRIX_EQ(expected, actual) \
   do {                                                    \
     SCOPED_TRACE("");                                     \
     ExpectTransformationMatrixEq(expected, actual);       \
   } while (false)
 
 // Should be used in test code only, for convenience. Production code should use
 // the gfx::Transform::GetInverse() API.
 gfx::Transform Inverse(const gfx::Transform& transform);
 
 }  // namespace cc
 
 #endif  // CC_TEST_GEOMETRY_TEST_UTILS_H_