Updating Gamepad API to match latest spec

content/browser/gamepad/gamepad_standard_mappings_mac.mm

Index: content/browser/gamepad/gamepad_standard_mappings_mac.mm
diff --git a/content/browser/gamepad/gamepad_standard_mappings_mac.mm b/content/browser/gamepad/gamepad_standard_mappings_mac.mm
index af41b4c44bb5f6c07706a3031e15d8d0b0bb253e..1722e571695033976d5b58fdd62007ed5323fd72 100644
--- a/content/browser/gamepad/gamepad_standard_mappings_mac.mm
+++ b/content/browser/gamepad/gamepad_standard_mappings_mac.mm
@@ -4,35 +4,10 @@
 
 #include "content/browser/gamepad/gamepad_standard_mappings.h"
 
-#include "content/common/gamepad_hardware_buffer.h"
-
 namespace content {
 
 namespace {
 
-float AxisToButton(float input) {
-  return (input + 1.f) / 2.f;
-}
-
-void DpadFromAxis(blink::WebGamepad* mapped, float dir) {
-  // Dpad is mapped as a direction on one axis, where -1 is up and it
-  // increases clockwise to 1, which is up + left. It's set to a large (> 1.f)
-  // number when nothing is depressed, except on start up, sometimes it's 0.0
-  // for no data, rather than the large number.
-  if (dir == 0.0f) {
-    mapped->buttons[kButtonDpadUp] = 0.f;
-    mapped->buttons[kButtonDpadDown] = 0.f;
-    mapped->buttons[kButtonDpadLeft] = 0.f;
-    mapped->buttons[kButtonDpadRight] = 0.f;
-  } else {
-    mapped->buttons[kButtonDpadUp] = (dir >= -1.f && dir < -0.7f) ||
-                                     (dir >= .95f && dir <= 1.f);
-    mapped->buttons[kButtonDpadRight] = dir >= -.75f && dir < -.1f;
-    mapped->buttons[kButtonDpadDown] = dir >= -.2f && dir < .45f;
-    mapped->buttons[kButtonDpadLeft] = dir >= .4f && dir <= 1.f;
-  }
-}
-
 void MapperXbox360Gamepad(
     const blink::WebGamepad& input,
     blink::WebGamepad* mapped) {