Add about:flags entry for enabling gamepad.

BUG=79050


Review URL: http://codereview.chromium.org/8679023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@111562 0039d316-1c4b-4281-b951-d872f2087c98

chrome/app/generated_resources.grd

@@ -4884,6 +4884,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_ENABLE_PLATFORM_APPS_DESCRIPTION" desc="Description for the flag to enable platform apps.">
         Enable advanced application capabilities.
       </message>
+      <message name="IDS_FLAGS_ENABLE_GAMEPAD_NAME" desc="Title for the flag to enable gamepad support.">
+        Enable Gamepad
+      </message>
+      <message name="IDS_FLAGS_ENABLE_GAMEPAD_DESCRIPTION" desc="Description for the flag to enable gamepad support.">
+        This API allows web applications to access data from gamepad devices connected to the system.
+      </message>
 
       <!-- Crashes -->
       <message name="IDS_CRASHES_TITLE" desc="Title for the chrome://crashes page.">

chrome/browser/about_flags.cc

@@ -434,6 +434,13 @@ const Experiment kExperiments[] = {
     SINGLE_VALUE_TYPE(switches::kAuraWindows)
   },
 #endif
+  {
+    "enable-gamepad",
+    IDS_FLAGS_ENABLE_GAMEPAD_NAME,
+    IDS_FLAGS_ENABLE_GAMEPAD_DESCRIPTION,
+    kOsWin,
+    SINGLE_VALUE_TYPE(switches::kEnableGamepad)
+  },
 };
 
 const Experiment* experiments = kExperiments;