Consume Mojo services directly in Blink's WebUSB implementation.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index e8861f95dae46c53e73d9a10c6d6ef7bf67293f6..ec87da79ce41b1e4c411dd102238df9ebc1efbd7 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -166,7 +166,6 @@
 #include "modules/screen_orientation/ScreenOrientationController.h"
 #include "modules/vr/VRController.h"
 #include "modules/wake_lock/ScreenWakeLock.h"
-#include "modules/webusb/USBController.h"
 #include "platform/ScriptForbiddenScope.h"
 #include "platform/TraceEvent.h"
 #include "platform/UserGestureIndicator.h"
@@ -1479,10 +1478,6 @@ void WebLocalFrameImpl::setCoreFrame(LocalFrame* frame)
     provideLocalFileSystemTo(*m_frame, LocalFileSystemClient::create());
     provideNavigatorContentUtilsTo(*m_frame, NavigatorContentUtilsClientImpl::create(this));
 
-    // Always provided so that availability of the API can be controlled by
-    // OriginTrials::webUSBEnabled().
-    USBController::provideTo(*m_frame, m_client ? m_client->usbClient() : nullptr);
-
     bool enableWebBluetooth = RuntimeEnabledFeatures::webBluetoothEnabled();
 #if OS(CHROMEOS) || OS(ANDROID)
     enableWebBluetooth = true;