Move KeySystemInfo to media.

media/base/key_system_info.cc

Index: media/base/key_system_info.cc
diff --git a/content/public/renderer/key_system_info.cc b/media/base/key_system_info.cc
similarity index 81%
rename from content/public/renderer/key_system_info.cc
rename to media/base/key_system_info.cc
index 9578ebfcfefcf111f0a2c07d8509aff7ba490c5e..f4369124cf157c089ddd6272467eb6762311a747 100644
--- a/content/public/renderer/key_system_info.cc
+++ b/media/base/key_system_info.cc
@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/public/renderer/key_system_info.h"
+#include "media/base/key_system_info.h"
 
-namespace content {
+namespace media {
 
 KeySystemInfo::KeySystemInfo(const std::string& key_system)
     : key_system(key_system),
@@ -16,4 +16,4 @@ KeySystemInfo::KeySystemInfo(const std::string& key_system)
 KeySystemInfo::~KeySystemInfo() {
 }
 
-}  // namespace content
+}  // namespace media