Revert of Turn webspeech on/off when tab goes fore/background (https://codereview.chromium.org/415433002/)

Reason for revert:
Tentatively reverting because [1] has been consistently crashing in 2 layout tests ever since this landed[2], and this is the more likely looking of the two CLs on the blamelist:

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog.html?url=%2Ftrunk%2Fsrc&range=285071%3A285072&mode=html

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=%2Ftrunk&range=178788%3A178788&mode=html

[1]: http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Android%20%28Nexus4%29

[2]: http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Android%20%28Nexus4%29/builds/16889

Original issue's description:
> Turn webspeech off when tab goes background
> 
> This change adds a toggle to turn webspeech off when tab goes background.
> And further request to turn media capture devices on will be denied.
> So Both WebRTC and webSpeech won't be able to initiate new requests when tab is in background.
> 
> BUG=396054
> R=dalecurtis@chromium.org, jam@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=285072

TBR=jam@chromium.org,juberti@chromium.org,xians@chromium.org,dalecurtis@google.com,dalecurtis@chromium.org,qinmin@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=396054

Review URL: https://codereview.chromium.org/416053002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285208 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 9 deletions

diff --git a/content/renderer/speech_recognition_dispatcher.cc b/content/renderer/speech_recognition_dispatcher.cc
index e59082d..3d76c20 100644
--- a/content/renderer/speech_recognition_dispatcher.cc
+++ b/content/renderer/speech_recognition_dispatcher.cc
@@ -35,15 +35,6 @@ SpeechRecognitionDispatcher::SpeechRecognitionDispatcher(
 SpeechRecognitionDispatcher::~SpeechRecognitionDispatcher() {
 }
 
-void SpeechRecognitionDispatcher::AbortAllRecognitions() {
-  for (HandleMap::iterator iter = handle_map_.begin();
-      iter != handle_map_.end();
-      ++iter) {
-    // OnEnd event will be sent to the SpeechRecognition object later.
-    abort(iter->second, recognizer_client_);
-  }
-}
-
 bool SpeechRecognitionDispatcher::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;