[PPAPI] Pepper MediaStream API audio track implementation and example.

ppapi/c/ppb_audio_frame.h

Index: ppapi/c/ppb_audio_frame.h
diff --git a/ppapi/c/ppb_audio_frame.h b/ppapi/c/ppb_audio_frame.h
index 3f2b2a34ebf10a286d0c3b91982f32f803ff8219..e17a964f34eb32588a761033370bdddb39be1e47 100644
--- a/ppapi/c/ppb_audio_frame.h
+++ b/ppapi/c/ppb_audio_frame.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From ppb_audio_frame.idl modified Thu Jan  9 14:39:24 2014. */
+/* From ppb_audio_frame.idl modified Thu Jan 16 15:39:03 2014. */
 
 #ifndef PPAPI_C_PPB_AUDIO_FRAME_H_
 #define PPAPI_C_PPB_AUDIO_FRAME_H_
@@ -13,6 +13,7 @@
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_time.h"
+#include "ppapi/c/ppb_audio_config.h"
 
 #define PPB_AUDIOFRAME_INTERFACE_0_1 "PPB_AudioFrame;0.1" /* dev */
 /**
@@ -56,6 +57,15 @@ struct PPB_AudioFrame_0_1 { /* dev */
    */
   void (*SetTimestamp)(PP_Resource frame, PP_TimeDelta timestamp);
   /**
+   * Gets the sample rate of the audio frame.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
+   * resource.
+   *
+   * @return The sample rate of the audio frame.
+   */
+  PP_AudioSampleRate (*GetSampleRate)(PP_Resource frame);
+  /**
    * Gets the sample size of the audio frame.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame