Add decrypt-only external clear key browser tests.

chrome/renderer/media/chrome_key_systems.cc

Index: chrome/renderer/media/chrome_key_systems.cc
diff --git a/chrome/renderer/media/chrome_key_systems.cc b/chrome/renderer/media/chrome_key_systems.cc
index 0372a80e95ab067e458edfcd095e49499652f3c8..19d19dfcf20537c3e89a4c04bcbe20238e4ac055 100644
--- a/chrome/renderer/media/chrome_key_systems.cc
+++ b/chrome/renderer/media/chrome_key_systems.cc
@@ -64,6 +64,8 @@ static void AddExternalClearKey(
     std::vector<KeySystemInfo>* concrete_key_systems) {
   static const char kExternalClearKeyKeySystem[] =
       "org.chromium.externalclearkey";
+  static const char kDecryptOnlyExternalClearKeyKeySystem[] =
+      "org.chromium.externalclearkey.decryptonly";
   static const char kExternalClearKeyPepperType[] =
       "application/x-ppapi-clearkey-cdm";
 
@@ -92,6 +94,10 @@ static void AddExternalClearKey(
   // failure case.
   info.key_system += ".initializefail";
   concrete_key_systems->push_back(info);
+
+  // Add support of decrypt-only mode in ClearKeyCdm.
+  info.key_system = kDecryptOnlyExternalClearKeyKeySystem;

[ddorwin, 2013/11/21 04:10:58]

This and 95 should be consistent.

[xhwang, 2013/11/22 01:47:36]

Done.

+  concrete_key_systems->push_back(info);
 }
 #endif  // defined(ENABLE_PEPPER_CDMS)