[Device Service] Move Gamepad Blink headers to be part of the Gamepad client library

ppapi/shared_impl/ppb_gamepad_shared.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/shared_impl/ppb_gamepad_shared.h"
 
 #include <string.h>
 
 #include <algorithm>
 
+#include "device/gamepad/public/cpp/gamepads.h"
+
 namespace ppapi {
 
 const size_t WebKitGamepads::kItemsLengthCap;
 
+// TODO: Remove this function and use ConvertDeviceGamepadData() instead.
 void ConvertWebKitGamepadData(const WebKitGamepads& webkit_data,
                               PP_GamepadsSampleData* output_data) {
   output_data->length = WebKitGamepads::kItemsLengthCap;
   for (unsigned i = 0; i < WebKitGamepads::kItemsLengthCap; ++i) {
     PP_GamepadSampleData& output_pad = output_data->items[i];
     const WebKitGamepad& webkit_pad = webkit_data.items[i];
     output_pad.connected = webkit_pad.connected ? PP_TRUE : PP_FALSE;
     if (webkit_pad.connected) {
       static_assert(sizeof(output_pad.id) == sizeof(webkit_pad.id),
                     "id size does not match");
       memcpy(output_pad.id, webkit_pad.id, sizeof(output_pad.id));
       output_pad.timestamp = static_cast<double>(webkit_pad.timestamp);
       output_pad.axes_length = webkit_pad.axes_length;
       for (unsigned j = 0; j < webkit_pad.axes_length; ++j)
         output_pad.axes[j] = static_cast<float>(webkit_pad.axes[j]);
       output_pad.buttons_length = webkit_pad.buttons_length;
       for (unsigned j = 0; j < webkit_pad.buttons_length; ++j)
         output_pad.buttons[j] = static_cast<float>(webkit_pad.buttons[j].value);
     }
   }
 }
 
+void ConvertDeviceGamepadData(const device::Gamepads& device_data,
+                              PP_GamepadsSampleData* output_data) {
+  output_data->length = device::Gamepads::kItemsLengthCap;
+  for (unsigned i = 0; i < device::Gamepads::kItemsLengthCap; ++i) {
+    PP_GamepadSampleData& output_pad = output_data->items[i];
+    const device::Gamepad& device_pad = device_data.items[i];
+    output_pad.connected = device_pad.connected ? PP_TRUE : PP_FALSE;
+    if (device_pad.connected) {
+      static_assert(sizeof(output_pad.id) == sizeof(device_pad.id),
+                    "id size does not match");
+      memcpy(output_pad.id, device_pad.id, sizeof(output_pad.id));
+      output_pad.timestamp = static_cast<double>(device_pad.timestamp);
+      output_pad.axes_length = device_pad.axes_length;
+      for (unsigned j = 0; j < device_pad.axes_length; ++j)
+        output_pad.axes[j] = static_cast<float>(device_pad.axes[j]);
+      output_pad.buttons_length = device_pad.buttons_length;
+      for (unsigned j = 0; j < device_pad.buttons_length; ++j)
+        output_pad.buttons[j] = static_cast<float>(device_pad.buttons[j].value);
+    }
+  }
+}
+
 }  // namespace ppapi