Add chrome side webusb permission UI code

chrome/browser/usb/web_usb_permission_bubble.cc

Index: chrome/browser/usb/web_usb_permission_bubble.cc
diff --git a/chrome/browser/usb/web_usb_permission_bubble.cc b/chrome/browser/usb/web_usb_permission_bubble.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c7ca5417692c1b51659c01d91c19826a2c60c1ad
--- /dev/null
+++ b/chrome/browser/usb/web_usb_permission_bubble.cc
@@ -0,0 +1,45 @@
+// Copyright 2015 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 "chrome/browser/usb/web_usb_permission_bubble.h"
+
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/chrome_bubble_manager.h"
+#include "chrome/browser/usb/usb_chooser_bubble_delegate.h"
+#include "components/bubble/bubble_controller.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_frame_host.h"
+
+ChromeWebUsbPermissionBubble::ChromeWebUsbPermissionBubble(
+    content::RenderFrameHost* render_frame_host)
+    : render_frame_host_(render_frame_host) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  DCHECK(render_frame_host);
+}
+
+ChromeWebUsbPermissionBubble::~ChromeWebUsbPermissionBubble() {
+  for (const auto& bubble : bubbles_) {
+    if (bubble)
+      bubble->CloseBubble(BUBBLE_CLOSE_FORCED);
+  }
+}
+
+void ChromeWebUsbPermissionBubble::GetPermission(
+    mojo::Array<device::usb::DeviceFilterPtr> device_filters,
+    const GetPermissionCallback& callback) {
+  content::WebContents* web_contents =
+      content::WebContents::FromRenderFrameHost(render_frame_host_);
+  Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
+  scoped_ptr<BubbleDelegate> bubble_delegate(new UsbChooserBubbleDelegate(
+      browser, device_filters.Pass(), render_frame_host_, callback));
+  BubbleReference bubble_reference =
+      browser->GetBubbleManager()->ShowBubble(bubble_delegate.Pass());
+  bubbles_.push_back(bubble_reference);
+}
+
+void ChromeWebUsbPermissionBubble::Bind(
+    mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  bindings_.AddBinding(this, request.Pass());
+}