Revert of Remove some legacy versions of StartsWith and EndsWith.

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 2fdcce24d26da104a596b008cf0d06e8f4ecc2f9..b0e9316e72abdcdffb475c3a4dc99f6304bec30c 100644
--- a/media/filters/source_buffer_stream_unittest.cc
+++ b/media/filters/source_buffer_stream_unittest.cc
@@ -306,7 +306,7 @@
       }
 
       // Handle preroll buffers.
-      if (base::EndsWith(timestamps[i], "P", base::CompareCase::SENSITIVE)) {
+      if (base::EndsWith(timestamps[i], "P", true)) {
         ASSERT_TRUE(buffer->is_key_frame());
         scoped_refptr<StreamParserBuffer> preroll_buffer;
         preroll_buffer.swap(buffer);
@@ -500,42 +500,40 @@
       bool is_duration_estimated = false;
 
       // Handle splice frame starts.
-      if (base::StartsWith(timestamps[i], "S(", base::CompareCase::SENSITIVE)) {
+      if (base::StartsWithASCII(timestamps[i], "S(", true)) {
         CHECK(!splice_frame);
         splice_frame = true;
         // Remove the "S(" off of the token.
         timestamps[i] = timestamps[i].substr(2, timestamps[i].length());
       }
-      if (splice_frame &&
-          base::EndsWith(timestamps[i], ")", base::CompareCase::SENSITIVE)) {
+      if (splice_frame && base::EndsWith(timestamps[i], ")", true)) {
         splice_frame = false;
         last_splice_frame = true;
         // Remove the ")" off of the token.
         timestamps[i] = timestamps[i].substr(0, timestamps[i].length() - 1);
       }
       // Handle config changes within the splice frame.
-      if (splice_frame &&
-          base::EndsWith(timestamps[i], "C", base::CompareCase::SENSITIVE)) {
+      if (splice_frame && base::EndsWith(timestamps[i], "C", true)) {
         splice_config_id++;
         CHECK(splice_config_id < stream_->audio_configs_.size() ||
               splice_config_id < stream_->video_configs_.size());
         // Remove the "C" off of the token.
         timestamps[i] = timestamps[i].substr(0, timestamps[i].length() - 1);
       }
-      if (base::EndsWith(timestamps[i], "K", base::CompareCase::SENSITIVE)) {
+      if (base::EndsWith(timestamps[i], "K", true)) {
         is_keyframe = true;
         // Remove the "K" off of the token.
         timestamps[i] = timestamps[i].substr(0, timestamps[i].length() - 1);
       }
       // Handle preroll buffers.
-      if (base::EndsWith(timestamps[i], "P", base::CompareCase::SENSITIVE)) {
+      if (base::EndsWith(timestamps[i], "P", true)) {
         is_keyframe = true;
         has_preroll = true;
         // Remove the "P" off of the token.
         timestamps[i] = timestamps[i].substr(0, timestamps[i].length() - 1);
       }
 
-      if (base::EndsWith(timestamps[i], "E", base::CompareCase::SENSITIVE)) {
+      if (base::EndsWith(timestamps[i], "E", true)) {
         is_duration_estimated = true;
         // Remove the "E" off of the token.
         timestamps[i] = timestamps[i].substr(0, timestamps[i].length() - 1);