Add CdmService to keep track of CDMs

chrome/common/chrome_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 "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "build/build_config.h"
 
@@ skipping 394 matching lines @@
 // Enables experimental hotword features specific to always-on.
 const char kEnableExperimentalHotwordHardware[] = "enable-hotword-hardware";
 
 // Enables logging for extension activity.
 const char kEnableExtensionActivityLogging[] =
     "enable-extension-activity-logging";
 
 const char kEnableExtensionActivityLogTesting[] =
     "enable-extension-activity-log-testing";
 
+// Enables the External Clear Key key system (used by media for
+// encrypted content).
+const char kEnableExternalClearKey[] = "enable-external-clear-key";

[ddorwin, 2016/01/26 20:21:53]

We might want to add  add "-cdm" or "-key-system" since this is not
self-explanatory. WDYT?

[ddorwin, 2016/01/26 20:21:53]

Should we use a more general name for this capability since it could also be
implemented on Android and other platforms? Also to clearly indicate that this
is for testing. Perhaps --enable-test-key-systems

[jrummell, 2016/03/04 01:19:40]

I like the generic term. Done.

+
 // Enable the fast unload controller, which speeds up tab/window close by
 // running a tab's onunload js handler independently of the GUI -
 // crbug.com/142458 .
 const char kEnableFastUnload[] = "enable-fast-unload";
 
 // Enables the Material Design version of chrome://downloads.
 const char kEnableMaterialDesignDownloads[] = "enable-md-downloads";
 
 // Enables the Material Design version of chrome://extensions.
 const char kEnableMaterialDesignExtensions[] = "enable-md-extensions";
@@ skipping 971 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches