WebAudio: record whether user gesture was available and provided.

third_party/WebKit/Source/modules/webaudio/AudioContext.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/webaudio/AudioContext.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
@@ skipping 98 matching lines @@
         resolver->resolve();
     }
 
     return promise;
 }
 
 ScriptPromise AudioContext::resumeContext(ScriptState* scriptState)
 {
     ASSERT(isMainThread());
 
+    recordUserGesture();

[Raymond Toy, 2016/06/03 17:57:52]

I think you probably want to do this around line 128, after the if statement
about the closed context.

[mlamouri (slow - plz ping), 2016/06/05 14:44:57]

Done.

+
     if (isContextClosed()) {
         return ScriptPromise::rejectWithDOMException(
             scriptState,
             DOMException::create(
                 InvalidAccessError,
                 "cannot resume a closed AudioContext"));
     }
 
     ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
@@ skipping 62 matching lines @@
     ASSERT(destination());
 
     if (contextState() == Running) {
         destination()->audioDestinationHandler().stopRendering();
         setContextState(Suspended);
         deferredTaskHandler().clearHandlersToBeDeleted();
     }
 }
 
 } // namespace blink
-