Fix mime type mappings when the unified media pipeline is enabled.

media/base/media.cc

Index: media/base/media.cc
diff --git a/media/base/media.cc b/media/base/media.cc
index f55d1c437a5bf6e3baee3b23a10355ce635153de..efc495b682e3150fd0d40496d5859e13d5dc5d82 100644
--- a/media/base/media.cc
+++ b/media/base/media.cc
@@ -4,15 +4,19 @@
 
 #include "media/base/media.h"
 
-#include "base/files/file_path.h"
+#include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
-#include "base/path_service.h"
-#include "base/synchronization/lock.h"
+#include "base/metrics/field_trial.h"
 #include "base/trace_event/trace_event.h"
-#include "build/build_config.h"
+#include "media/base/media_switches.h"
 #include "media/base/yuv_convert.h"
 
+#if defined(OS_ANDROID)
+#include "base/android/build_info.h"
+#include "media/base/android/media_codec_util.h"
+#endif
+
 #if !defined(MEDIA_DISABLE_FFMPEG)
 #include "media/ffmpeg/ffmpeg_common.h"
 #endif
@@ -21,6 +25,13 @@ namespace media {
 
 // Media must only be initialized once, so use a LazyInstance to ensure this.
 class MediaInitializer {
+ public:
+  void enable_platform_decoder_support() {
+    has_platform_decoder_support_ = true;
+  }
+
+  bool has_platform_decoder_support() { return has_platform_decoder_support_; }
+
  private:
   friend struct base::DefaultLazyInstanceTraits<MediaInitializer>;
 
@@ -51,6 +62,8 @@ class MediaInitializer {
     NOTREACHED() << "MediaInitializer should be leaky!";
   }
 
+  bool has_platform_decoder_support_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(MediaInitializer);
 };
 
@@ -61,4 +74,47 @@ void InitializeMediaLibrary() {
   g_media_library.Get();
 }
 
+#if defined(OS_ANDROID)
+void EnablePlatformDecoderSupport() {
+  g_media_library.Pointer()->enable_platform_decoder_support();
+}
+
+bool HasPlatformDecoderSupport() {
+  return g_media_library.Pointer()->has_platform_decoder_support();
+}
+
+bool PlatformHasOpusSupport() {
+  return base::android::BuildInfo::GetInstance()->sdk_int() >= 21;
+}
+
+bool PlatformHasVp9Support() {
+  return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
+}
+
+bool IsUnifiedMediaPipelineEnabled() {
+  // TODO(dalecurtis): This experiment is temporary and should be removed once
+  // we have enough data to support the primacy of the unified media pipeline;
+  // see http://crbug.com/533190 for details.
+  //
+  // Note: It's important to query the field trial state first, to ensure that
+  // UMA reports the correct group.
+  const std::string group_name =
+      base::FieldTrialList::FindFullName("UnifiedMediaPipelineTrial");
+  const bool enabled_via_cli =
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableUnifiedMediaPipeline);
+  return enabled_via_cli ||
+         base::StartsWith(group_name, "Enabled", base::CompareCase::SENSITIVE);
+}
+
+bool IsUnifiedMediaPipelineEnabledForMse() {
+  // Don't check IsUnifiedMediaPipelineEnabled() here since we don't want MSE to
+  // be enabled via experiment yet; only when the existing implementation can't
+  // be used (i.e. MediaCodec unavailable).
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+             switches::kEnableUnifiedMediaPipeline) ||
+         !MediaCodecUtil::IsMediaCodecAvailable();
+}
+#endif
+
 }  // namespace media