Fixed button values for mac XBox gamepad userland driver.

Patch from Joseph Gentle <josephg@gmail.com>

R=jeremya@chromium.org
BUG=243995

Review URL: https://chromiumcodereview.appspot.com/15953004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202593 0039d316-1c4b-4281-b951-d872f2087c98

AUTHORS

@@ -261,3 +261,4 @@ Umar Hansa <umar.hansa@gmail.com>
 Radu Stavila <stavila@adobe.com>
 Rijubrata Bhaumik <rijubrata.bhaumik@intel.com>
 Teodora Novkovic <teodora.petrovic@gmail.com>
+Joseph Gentle <josephg@gmail.com>

content/browser/gamepad/gamepad_platform_data_fetcher_mac.mm

@@ -407,12 +407,12 @@ void GamepadPlatformDataFetcherMac::XboxValueChanged(
   WebGamepad& pad = data_.items[slot];
 
   for (size_t i = 0; i < 6; i++) {
-    pad.buttons[i] = data.buttons[i] ? 0.0f : 1.1f;
+    pad.buttons[i] = data.buttons[i] ? 1.0f : 0.0f;
   }
   pad.buttons[6] = data.triggers[0];
   pad.buttons[7] = data.triggers[1];
   for (size_t i = 8; i < 17; i++) {
-    pad.buttons[i] = data.buttons[i - 2] ? 0.0f : 1.1f;
+    pad.buttons[i] = data.buttons[i - 2] ? 1.0f : 0.0f;
   }
   for (size_t i = 0; i < arraysize(data.axes); i++) {
     pad.axes[i] = data.axes[i];