Adding functionality for activating for the WebRTC EchoCanceller3 functionality in Chrome.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 4fd3c68be996609d0ccc1711aa0591949014b47f..2d8b02a7a527cc953cd65d56d7ee2c931527161b 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -749,6 +749,9 @@ const FeatureEntry kFeatureEntries[] = {
     {"enable-webrtc-stun-origin", IDS_FLAGS_WEBRTC_STUN_ORIGIN_NAME,
      IDS_FLAGS_WEBRTC_STUN_ORIGIN_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableWebRtcStunOrigin)},
+    {"enable-webrtc-echo-canceller3", IDS_FLAGS_WEBRTC_ECHO_CANCELLER_3_NAME,
+     IDS_FLAGS_WEBRTC_ECHO_CANCELLER_3_DESCRIPTION, kOsAll,
+     FEATURE_VALUE_TYPE(features::kUseEchoCanceller3)},
 #endif  // ENABLE_WEBRTC
 #if defined(OS_ANDROID)
     {"enable-osk-overscroll", IDS_FLAGS_ENABLE_OSK_OVERSCROLL_NAME,
@@ -1849,10 +1852,9 @@ const FeatureEntry kFeatureEntries[] = {
          ntp_snippets::kStudyName)},
     {"override-ntp-suggestions-source", IDS_FLAGS_OVERRIDE_SNIPPETS_SOURCE_NAME,
      IDS_FLAGS_OVERRIDE_SNIPPETS_SOURCE_DESCRIPTION, kOsAndroid,
-     FEATURE_WITH_VARIATIONS_VALUE_TYPE(

[hlundin-chromium, 2017/02/09 10:20:45]

I think you should avoid changing the formatting for parts you don't touch.

[peah, 2017/02/15 13:24:24]

Thanks!
Done.

-         ntp_snippets::kContentSuggestionsSource,
-         kNTPSnippetsFeatureVariations,
-         ntp_snippets::kStudyName)},
+     FEATURE_WITH_VARIATIONS_VALUE_TYPE(ntp_snippets::kContentSuggestionsSource,
+                                        kNTPSnippetsFeatureVariations,
+                                        ntp_snippets::kStudyName)},
     {"enable-ntp-snippets-increased-visibility",
      IDS_FLAGS_ENABLE_NTP_SNIPPETS_VISIBILITY_NAME,
      IDS_FLAGS_ENABLE_NTP_SNIPPETS_VISIBILITY_DESCRIPTION, kOsAndroid,
@@ -2206,8 +2208,8 @@ const FeatureEntry kFeatureEntries[] = {
 
 #if defined(OS_CHROMEOS)
     {"show-arc-files-app", IDS_FLAGS_SHOW_ARC_FILES_APP_NAME,
-      IDS_FLAGS_SHOW_ARC_FILES_APP_DESCRIPTION, kOsCrOS,

[hlundin-chromium, 2017/02/09 10:20:45]

Same here. Don't change format.

[peah, 2017/02/15 13:24:24]

Thanks!
Done.

-      FEATURE_VALUE_TYPE(arc::kShowArcFilesAppFeature)},
+     IDS_FLAGS_SHOW_ARC_FILES_APP_DESCRIPTION, kOsCrOS,
+     FEATURE_VALUE_TYPE(arc::kShowArcFilesAppFeature)},
 #endif // defined(OS_CHROMEOS)
 
     // NOTE: Adding new command-line switches requires adding corresponding