Revert 7338 "Fixed the android build by making the interface pur..."

> Fixed the android build by making the interface pure virtual.
> 
> TBR=asapersson@webrtc.org, bjornv@webrtc.org,
> 
> Review URL: https://webrtc-codereview.appspot.com/24789004

TBR=xians@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/30579004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7341 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/media/webrtc/fakewebrtcvoiceengine.h b/talk/media/webrtc/fakewebrtcvoiceengine.h
index 542581a..52a50ff 100644
--- a/talk/media/webrtc/fakewebrtcvoiceengine.h
+++ b/talk/media/webrtc/fakewebrtcvoiceengine.h
@@ -38,7 +38,6 @@
 #include "talk/media/webrtc/fakewebrtccommon.h"
 #include "talk/media/webrtc/webrtcvoe.h"
 #include "webrtc/base/basictypes.h"
-#include "webrtc/base/fileutils.h"
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/stringutils.h"
 #ifdef USE_WEBRTC_DEV_BRANCH
@@ -129,7 +128,6 @@
   WEBRTC_STUB_CONST(delay_offset_ms, ());
   WEBRTC_STUB(StartDebugRecording, (const char filename[kMaxFilenameSize]));
   WEBRTC_STUB(StartDebugRecording, (FILE* handle));
-  WEBRTC_STUB(StartDebugRecording, (rtc::PlatformFile handle));
   WEBRTC_STUB(StopDebugRecording, ());
   virtual webrtc::EchoCancellation* echo_cancellation() const OVERRIDE {
     return NULL;
diff --git a/webrtc/modules/audio_processing/include/audio_processing.h b/webrtc/modules/audio_processing/include/audio_processing.h
index bcc83ae..53157ae 100644
--- a/webrtc/modules/audio_processing/include/audio_processing.h
+++ b/webrtc/modules/audio_processing/include/audio_processing.h
@@ -329,7 +329,7 @@
   // Same as above but uses an existing PlatformFile handle. Takes ownership
   // of |handle| and closes it at StopDebugRecording().
   // TODO(xians): Make this interface pure virtual.
-  virtual int StartDebugRecording(rtc::PlatformFile handle) = 0;
+  virtual int StartDebugRecording(rtc::PlatformFile handle) { return -1; }
 
   // Stops recording debugging information, and closes the file. Recording
   // cannot be resumed in the same file (without overwriting it).
diff --git a/webrtc/modules/audio_processing/include/mock_audio_processing.h b/webrtc/modules/audio_processing/include/mock_audio_processing.h
index 3f2b1f9..8258bb6 100644
--- a/webrtc/modules/audio_processing/include/mock_audio_processing.h
+++ b/webrtc/modules/audio_processing/include/mock_audio_processing.h
@@ -239,8 +239,6 @@
       int(const char filename[kMaxFilenameSize]));
   MOCK_METHOD1(StartDebugRecording,
       int(FILE* handle));
-  MOCK_METHOD1(StartDebugRecording,
-      int(rtc::PlatformFile handle));
   MOCK_METHOD0(StopDebugRecording,
       int());
   virtual MockEchoCancellation* echo_cancellation() const {