Add kGoogEchoCancellation to MediaConstraintsInterface.

talk/app/webrtc/mediaconstraintsinterface.cc

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 30 matching lines @@
 const char MediaConstraintsInterface::kMaxWidth[] = "maxWidth";
 const char MediaConstraintsInterface::kMinWidth[] = "minWidth";
 const char MediaConstraintsInterface::kMaxHeight[] = "maxHeight";
 const char MediaConstraintsInterface::kMinHeight[] = "minHeight";
 const char MediaConstraintsInterface::kMaxFrameRate[] = "maxFrameRate";
 const char MediaConstraintsInterface::kMinFrameRate[] = "minFrameRate";
 
 // Audio constraints.
 const char MediaConstraintsInterface::kEchoCancellation[] =
     "googEchoCancellation";
+const char MediaConstraintsInterface::kGoogEchoCancellation[] =

[Andrew MacDonald, 2015/06/15 06:58:54]

Not for this CL of course, but should we change the other "goog" flags to be
similarly Goog prefixed? Not sure it's worth the pain ;)

[tommi, 2015/06/15 07:12:51]

Don't know if it's worth spending the time on it right now but yes it would be
good to be consistent.  I'll keep it in mind with future CLs I see in this area.
I saw a todo for removing googEchoCancellation2.  Maybe there's some cleanup
needed.

+    "googEchoCancellation";
 const char MediaConstraintsInterface::kExperimentalEchoCancellation[] =
     "googEchoCancellation2";
 const char MediaConstraintsInterface::kExtendedFilterEchoCancellation[] =
     "googEchoCancellation2";
 const char MediaConstraintsInterface::kDAEchoCancellation[] =
     "googDAEchoCancellation";
 const char MediaConstraintsInterface::kAutoGainControl[] =
     "googAutoGainControl";
 const char MediaConstraintsInterface::kExperimentalAutoGainControl[] =
     "googAutoGainControl2";
@@ skipping 97 matching lines @@
       ++*mandatory_constraints;
     return rtc::FromString(string_value, value);
   }
   if (constraints->GetOptional().FindFirst(key, &string_value)) {
     return rtc::FromString(string_value, value);
   }
   return false;
 }
 
 }  // namespace webrtc