[RemotePlayback] Keep track of source compatibility and reject prompt() correspondingly

third_party/WebKit/Source/modules/remoteplayback/RemotePlaybackTest.cpp

 // Copyright 2016 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/remoteplayback/RemotePlayback.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "bindings/core/v8/V8BindingForTesting.h"
 #include "bindings/modules/v8/RemotePlaybackAvailabilityCallback.h"
 #include "core/dom/DocumentUserGestureToken.h"
@@ skipping 37 matching lines @@
 
 class RemotePlaybackTest : public ::testing::Test {
  protected:
   void cancelPrompt(RemotePlayback* remotePlayback) {
     remotePlayback->promptCancelled();
   }
 
   void setState(RemotePlayback* remotePlayback, WebRemotePlaybackState state) {
     remotePlayback->stateChanged(state);
   }
-
-  void setAvailability(RemotePlayback* remotePlayback, bool available) {
-    remotePlayback->availabilityChanged(available);
-  }
 };
 
 TEST_F(RemotePlaybackTest, PromptCancelledRejectsWithNotAllowedError) {
   V8TestingScope scope;
 
   auto pageHolder = DummyPageHolder::create();
 
   HTMLMediaElement* element = HTMLVideoElement::create(pageHolder->document());
   RemotePlayback* remotePlayback =
       HTMLMediaElementRemotePlayback::remote(*element);
@@ skipping 179 matching lines @@
 
   EXPECT_CALL(*resolve, call(::testing::_)).Times(1);
   EXPECT_CALL(*reject, call(::testing::_)).Times(0);
 
   remotePlayback
       ->watchAvailability(scope.getScriptState(), availabilityCallback)
       .then(resolve->bind(), reject->bind());
 
   HTMLMediaElementRemotePlayback::setBooleanAttribute(
       HTMLNames::disableremoteplaybackAttr, *element, true);
-  setAvailability(remotePlayback, true);
 
   // Runs pending promises.
   v8::MicrotasksScope::PerformCheckpoint(scope.isolate());
 
   // Verify mock expectations explicitly as the mock objects are garbage
   // collected.
   ::testing::Mock::VerifyAndClear(resolve);
   ::testing::Mock::VerifyAndClear(reject);
   ::testing::Mock::VerifyAndClear(callbackFunction);
 }
 
 }  // namespace blink