Provide the DeviceManager service to the renderer directly, no app.

chrome/browser/chrome_content_browser_client.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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 115 matching lines @@
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/child_process_host.h"
 #include "content/public/common/content_descriptors.h"
 #include "content/public/common/sandbox_type.h"
 #include "content/public/common/service_registry.h"
 #include "content/public/common/url_utils.h"
 #include "content/public/common/web_preferences.h"
-#include "device/devices_app/public/cpp/constants.h"
-#include "device/devices_app/public/cpp/devices_app_factory.h"
 #include "gin/v8_initializer.h"
 #include "mojo/application/public/cpp/application_delegate.h"
 #include "net/base/mime_util.h"
 #include "net/cookies/canonical_cookie.h"
 #include "net/cookies/cookie_options.h"
 #include "net/ssl/ssl_cert_request_info.h"
 #include "ppapi/host/ppapi_host.h"
 #include "storage/browser/fileapi/external_mount_points.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 108 matching lines @@
 #if defined(ENABLE_WEBRTC)
 #include "chrome/browser/media/webrtc_logging_handler_host.h"
 #endif
 
 #if defined(ENABLE_MEDIA_ROUTER)
 #include "chrome/browser/media/router/presentation_service_delegate_impl.h"
 #endif
 
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 #include "chrome/browser/usb/web_usb_permission_provider.h"
+#include "device/devices_app/usb/device_manager_impl.h"
 #endif
 
 using base::FileDescriptor;
 using blink::WebWindowFeatures;
 using content::AccessTokenStore;
 using content::BrowserThread;
 using content::BrowserURLHandler;
 using content::ChildProcessSecurityPolicy;
 using content::QuotaPermissionContext;
 using content::RenderFrameHost;
@@ skipping 340 matching lines @@
 
   rules->script_rules.push_back(
       ContentSettingPatternSource(ContentSettingsPattern::Wildcard(),
                                   ContentSettingsPattern::Wildcard(),
                                   CONTENT_SETTING_ALLOW,
                                   std::string(),
                                   incognito));
 }
 #endif  // defined(ENABLE_EXTENSIONS)
 
+void CreateUsbDeviceManager(
+    RenderFrameHost* render_frame_host,
+    mojo::InterfaceRequest<device::usb::DeviceManager> request) {

[Ken Rockot(use gerrit already), 2015/09/29 00:22:53]

you should include "device/usb/public/interfaces/device_manager.mojom"
regardless of platform

+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  device::usb::PermissionProviderPtr permission_provider;
+  WebUSBPermissionProvider::Create(render_frame_host,
+                                   mojo::GetProxy(&permission_provider));
+  device::usb::DeviceManagerImpl::Create(permission_provider.Pass(),
+                                         request.Pass());
+#endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
+}
+
 }  // namespace
 
 ChromeContentBrowserClient::ChromeContentBrowserClient()
     :
       weak_factory_(this) {
 #if defined(ENABLE_PLUGINS)
   for (size_t i = 0; i < arraysize(kPredefinedAllowedDevChannelOrigins); ++i)
     allowed_dev_channel_origins_.insert(kPredefinedAllowedDevChannelOrigins[i]);
   for (size_t i = 0; i < arraysize(kPredefinedAllowedFileHandleOrigins); ++i)
     allowed_file_handle_origins_.insert(kPredefinedAllowedFileHandleOrigins[i]);
@@ skipping 1901 matching lines @@
 #endif
 
 void ChromeContentBrowserClient::RegisterFrameMojoShellServices(
     content::ServiceRegistry* registry,
     content::RenderFrameHost* render_frame_host) {
 #if defined(OS_CHROMEOS)
   registry->AddService(
       base::Bind(&chromeos::attestation::PlatformVerificationImpl::Create,
                  render_frame_host));
 #endif
-#if !defined(OS_ANDROID) && !defined(OS_IOS)
-  registry->AddService(
-      base::Bind(&WebUSBPermissionProvider::Create, render_frame_host));
-#endif
 }
 
-void ChromeContentBrowserClient::RegisterInProcessMojoApplications(
-    StaticMojoApplicationMap* apps) {
-#if !defined(OS_ANDROID) && !defined(OS_IOS)
-  apps->insert(std::make_pair(GURL(device::kDevicesMojoAppUrl),
-                              base::Bind(&device::DevicesAppFactory::CreateApp,
-                                         base::ThreadTaskRunnerHandle::Get())));
-#endif
+void ChromeContentBrowserClient::RegisterRenderFrameMojoServices(
+    content::ServiceRegistry* registry,
+    content::RenderFrameHost* render_frame_host) {
+  registry->AddService(base::Bind(&CreateUsbDeviceManager, render_frame_host));
 }
 
 void ChromeContentBrowserClient::OpenURL(
     content::BrowserContext* browser_context,
     const content::OpenURLParams& params,
     const base::Callback<void(content::WebContents*)>& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
   chrome::NavigateParams nav_params(
@@ skipping 105 matching lines @@
   if (channel <= kMaxDisableEncryptionChannel) {
     static const char* const kWebRtcDevSwitchNames[] = {
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)