Show a volume indicator as audio is being recorded.

Per UX input from Cole, this matches the implementation in the android voice actions app.

Changes in this CL:
- Instead of the old mic icon use the recently added mic-volume-empty, mic-volume-full and mask images for the volume indicator.
- Extended the endpointer code to return the audio RMS level (copied from the original source).
- SpeechRecognizer receives the above calculated RMS level and computes a volume level in the [0.0-1.0] range.
- SpeechInputManager receives the above computed volume level and passes it to SpeechInputBubbleController for display, which passes it to SpeechInputBubble.
- SpeechInputBubbleBase creates the appropriate skia bitmap for the volume indicator and passes to the platform specific code for display.
- As part of the above SpeechInputBubbleController addition for volume level, I wrote a single function to process all calls received by it and handled in the UI thread for simplicity.

BUG=53598
TEST=updated existing tests. Also test manually, use speech input and verify the audio level changes appropriately in the UI as mic is moved near and far.

Review URL: http://codereview.chromium.org/3384005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@59638 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 2 deletions

diff --git a/chrome/browser/speech/endpointer/endpointer_unittest.cc b/chrome/browser/speech/endpointer/endpointer_unittest.cc
index b49a6a6..bbdc572 100644
--- a/chrome/browser/speech/endpointer/endpointer_unittest.cc
+++ b/chrome/browser/speech/endpointer/endpointer_unittest.cc
@@ -74,7 +74,7 @@ class EnergyEndpointerFrameProcessor : public FrameProcessor {
       : endpointer_(endpointer) {}
 
   EpStatus ProcessFrame(int64 time, int16* samples, int frame_size) {
-    endpointer_->ProcessAudioFrame(time, samples, kFrameSize);
+    endpointer_->ProcessAudioFrame(time, samples, kFrameSize, NULL);
     int64 ep_time;
     return endpointer_->Status(&ep_time);
   }
@@ -117,7 +117,7 @@ class EndpointerFrameProcessor : public FrameProcessor {
       : endpointer_(endpointer) {}
 
   EpStatus ProcessFrame(int64 time, int16* samples, int frame_size) {
-    endpointer_->ProcessAudio(samples, kFrameSize);
+    endpointer_->ProcessAudio(samples, kFrameSize, NULL);
     int64 ep_time;
     return endpointer_->Status(&ep_time);
   }