MSE: Verify MediaLog events created by existing WebM unit tests

media/filters/source_buffer_stream_unittest.cc

Index: media/filters/source_buffer_stream_unittest.cc
diff --git a/media/filters/source_buffer_stream_unittest.cc b/media/filters/source_buffer_stream_unittest.cc
index 8f518766472019feeb22b8a3db31858c459fc0bf..414cca248bf924abadde21edcb49aebc786cd76c 100644
--- a/media/filters/source_buffer_stream_unittest.cc
+++ b/media/filters/source_buffer_stream_unittest.cc
@@ -25,11 +25,6 @@ using ::testing::HasSubstr;
 using ::testing::InSequence;
 using ::testing::StrictMock;
 
-// Helper macros to reduce boilerplate when verifying media log entries.
-#define EXPECT_MEDIA_LOG_STRING(x) \
-  EXPECT_CALL(*media_log_, DoAddEventLogString((x)))
-#define CONTAINS_STRING(arg, x) (std::string::npos != (arg).find(x))
-
 namespace media {
 
 typedef StreamParser::BufferQueue BufferQueue;
@@ -41,6 +36,8 @@ static const uint8 kDataB = 0x33;
 static const int kDataSize = 1;
 
 // Matchers for verifying common media log entry strings.
+#define CONTAINS_STRING(arg, x) (std::string::npos != (arg).find(x))
+
 MATCHER(ContainsMissingKeyframeLog, "") {
   return CONTAINS_STRING(arg,
                          "Media segment did not begin with key frame. Support "