Add enable-gamepad to content switches

Part of larger patch here http://codereview.chromium.org/8345027/ which is
updated with remaining pieces.

BUG=79050
TEST=


Review URL: http://codereview.chromium.org/8413042

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107753 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/renderer_host/browser_render_process_host.cc

@@ -568,6 +568,7 @@ void BrowserRenderProcessHost::PropagateBrowserCommandLineToRenderer(
     switches::kDisableWebSockets,
     switches::kEnableAccessibilityLogging,
     switches::kEnableDCHECK,
+    switches::kEnableGamepad,
     switches::kEnableGPUServiceLogging,
     switches::kEnableGPUClientLogging,
     switches::kEnableLogging,

content/public/common/content_switches.cc

@@ -192,6 +192,9 @@ const char kEnableDeviceMotion[]            = "enable-device-motion";
 // Enable the JavaScript Full Screen API.
 const char kDisableFullScreen[]             = "disable-fullscreen";
 
+// Enable the Gamepad API
+const char kEnableGamepad[]                 = "enable-gamepad";
+
 // Enable the GPU plugin and Pepper 3D rendering.
 const char kEnableGPUPlugin[]               = "enable-gpu-plugin";
 

content/public/common/content_switches.h

@@ -70,6 +70,7 @@ extern const char kEnableAccessibilityLogging[];
 CONTENT_EXPORT extern const char kEnableDNSCertProvenanceChecking[];
 CONTENT_EXPORT extern const char kEnableDeviceMotion[];
 CONTENT_EXPORT extern const char kDisableFullScreen[];
+extern const char kEnableGamepad[];
 extern const char kEnableGPUPlugin[];
 CONTENT_EXPORT extern const char kEnableLogging[];
 extern const char kEnableMediaSource[];