Make autoplay policies no longer platform dependant.

media/base/media_util.cc

Index: media/base/media_util.cc
diff --git a/media/base/media_util.cc b/media/base/media_util.cc
index a6516cd23058a1795f144fa23b1e57c6cc5c270a..b1a8826028a8f9f80cffbf7708f7dd75bcdef141 100644
--- a/media/base/media_util.cc
+++ b/media/base/media_util.cc
@@ -4,6 +4,9 @@
 
 #include "media/base/media_util.h"
 
+#include "base/command_line.h"
+#include "media/base/media_switches.h"
+
 namespace media {
 
 std::vector<uint8_t> EmptyExtraData() {
@@ -19,4 +22,20 @@ EncryptionScheme AesCtrEncryptionScheme() {
                           EncryptionScheme::Pattern());
 }
 
+std::string GetEffectiveAutoplayPolicy(const base::CommandLine& command_line) {
+  if (command_line.HasSwitch(switches::kIgnoreAutoplayRestrictionsForTests))
+    return switches::autoplay::kNoUserGestureRequiredPolicy;
+
+  // Return the default policy if none is specified in the command line.
+  if (!command_line.HasSwitch(switches::kAutoplayPolicy)) {
+#if defined(OS_ANDROID)
+    return switches::autoplay::kUserGestureRequiredPolicy;
+#else
+    return switches::autoplay::kNoUserGestureRequiredPolicy;
+#endif
+  }
+
+  return command_line.GetSwitchValueASCII(switches::kAutoplayPolicy);
+}
+
 }  // namespace media