Update Gamepad API to match the latest specification

ppapi/shared_impl/ppb_gamepad_shared.cc

Index: ppapi/shared_impl/ppb_gamepad_shared.cc
diff --git a/ppapi/shared_impl/ppb_gamepad_shared.cc b/ppapi/shared_impl/ppb_gamepad_shared.cc
index c45494a00c1c2dd07b4bf9778350ddf583825c7b..ccd0b7157d2e81f93de13e37c4b7af54d3bcf865 100644
--- a/ppapi/shared_impl/ppb_gamepad_shared.cc
+++ b/ppapi/shared_impl/ppb_gamepad_shared.cc
@@ -18,14 +18,12 @@ void ConvertWebKitGamepadData(const WebKitGamepads& webkit_data,
     if (webkit_pad.connected) {
       COMPILE_ASSERT(sizeof(output_pad.id) == sizeof(webkit_pad.id),
                      id_size_does_not_match);
-      COMPILE_ASSERT(sizeof(output_pad.axes) == sizeof(webkit_pad.axes),
-                     axes_size_does_not_match);
       memcpy(output_pad.id, webkit_pad.id, sizeof(output_pad.id));
       output_pad.timestamp = webkit_pad.timestamp;
       output_pad.axes_length = webkit_pad.axes_length;
-      memcpy(output_pad.axes, webkit_pad.axes, sizeof(output_pad.axes));
+      for (unsigned j = 0; j < webkit_pad.axes_length; ++j)
+        output_pad.axes[j] = webkit_pad.axes[j];

[dmichael (off chromium), 2014/05/14 17:39:02]

I would expect you to get a warning for loss of precision if the left is a float
and the right is a double. You probably should static_cast<float>?

[Inactive, 2014/05/14 17:49:50]

My compiler did not complain but this is a good point. I have added the cast.

       output_pad.buttons_length = webkit_pad.buttons_length;
-
       for (unsigned j = 0; j < webkit_pad.buttons_length; ++j)
         output_pad.buttons[j] = webkit_pad.buttons[j].value;
     }