Android: enable/disable WebRTC HW H264 with a flag.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index ce3ce3c822f9dc7ea9eabf0cc35690c5a2d3a9e4..f80c86c489ce44d75e15eed45cff20e47235d39f 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5661,6 +5661,18 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_WEBRTC_HW_ENCODING_DESCRIPTION" desc="Description of chrome:flags option to turn off WebRTC hardware video encoding support.">
         Support in WebRTC for encoding video streams using platform hardware.
       </message>
+      <message name="IDS_FLAGS_WEBRTC_HW_ENCODING_ALL">
+        Disable all hw encoding
+      </message>
+      <message name="IDS_FLAGS_WEBRTC_HW_ENCODING_VPX">
+        Disable vpx hw encoding
+      </message>
+      <message name="IDS_FLAGS_WEBRTC_HW_ENCODING_H264">
+        Disable h264 hw encoding
+      </message>
+      <message name="IDS_FLAGS_WEBRTC_HW_ENCODING_NONE">
+        Disable none hw encoding
+      </message>
       <message name="IDS_FLAGS_WEBRTC_STUN_ORIGIN_NAME" desc="Name of chrome:flags option to turn on Origin header for WebRTC STUN messages">
         WebRTC Stun origin header
       </message>