Make autoplay policies no longer platform dependant.

media/base/media_switches.cc

 // Copyright (c) 2012 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 "media/base/media_switches.h"
+#include "base/command_line.h"
 #include "build/build_config.h"
-#include "media/base/media_switches.h"
 #include "ppapi/features/features.h"
 
 namespace switches {
 
 // Allow users to specify a custom buffer size for debugging purpose.
 const char kAudioBufferSize[] = "audio-buffer-size";
 
 // Command line flag name to set the autoplay policy.
 const char kAutoplayPolicy[] = "autoplay-policy";
 
@@ skipping 122 matching lines @@
 const char kMSEVideoBufferSizeLimit[] = "mse-video-buffer-size-limit";
 
 // Ignores all autoplay restrictions. It will ignore the current autoplay policy
 // and all restrictions such as playback in a background tab. It should only be
 // enabled for testing.
 const char kIgnoreAutoplayRestrictionsForTests[] =
     "ignore-autoplay-restrictions";
 
 namespace autoplay {
 
-// Autoplay policy to require a user gesture in ordor to play for cross origin
-// iframes.
-const char kCrossOriginUserGestureRequiredPolicy[] =
-    "cross-origin-user-gesture-required";
-
 // Autoplay policy that does not require any user gesture.
 const char kNoUserGestureRequiredPolicy[] = "no-user-gesture-required";
 
 // Autoplay policy to require a user gesture in order to play.
 const char kUserGestureRequiredPolicy[] = "user-gesture-required";
 
+// Autoplay policy to require a user gesture in ordor to play for cross origin
+// iframes.
+const char kUserGestureRequiredForCrossOriginPolicy[] =
+    "user-gesture-required-for-cross-origin";
+
 }  // namespace autoplay
 
 }  // namespace switches
 
 namespace media {
 
 // Use new audio rendering mixer.
 const base::Feature kNewAudioRenderingMixingStrategy{
     "NewAudioRenderingMixingStrategy", base::FEATURE_DISABLED_BY_DEFAULT};
 
@@ skipping 73 matching lines @@
 // Enables video decode acceleration using the D3D11 video decoder api.
 // This is completely insecure - DO NOT USE except for testing.
 const base::Feature kD3D11VideoDecoding{"D3D11VideoDecoding",
                                         base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables H264 HW encode acceleration using Media Foundation for Windows.
 const base::Feature kMediaFoundationH264Encoding{
     "MediaFoundationH264Encoding", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif  // defined(OS_WIN)
 
+std::string GetEffectiveAutoplayPolicy(const base::CommandLine& command_line) {
+  // |kIgnoreAutoplayRestrictionsForTests| overrides all other settings.
+  if (command_line.HasSwitch(switches::kIgnoreAutoplayRestrictionsForTests))
+    return switches::autoplay::kNoUserGestureRequiredPolicy;
+
+  // Return the autoplay policy set in teh command line, if any.
+  if (command_line.HasSwitch(switches::kAutoplayPolicy))
+    return command_line.GetSwitchValueASCII(switches::kAutoplayPolicy);
+
+  // The default value is platform dependant.
+#if defined(OS_ANDROID)
+  return switches::autoplay::kUserGestureRequiredPolicy;
+#else
+  return switches::autoplay::kNoUserGestureRequiredPolicy;
+#endif
+}
+
 }  // namespace media