Move the Web Bluetooth implementation from child/ to renderer/.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index c40ca2146f3debc8f399d3907fbc27378a44e69f..3e0f81f291a4f5228efe6f07b5fd33c4ccd7439f 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -60,6 +60,7 @@
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
 #include "content/renderer/accessibility/renderer_accessibility.h"
+#include "content/renderer/bluetooth/web_bluetooth_impl.h"
 #include "content/renderer/browser_plugin/browser_plugin.h"
 #include "content/renderer/browser_plugin/browser_plugin_manager.h"
 #include "content/renderer/child_frame_compositing_helper.h"
@@ -3803,6 +3804,15 @@ void RenderFrameImpl::unregisterProtocolHandler(const WebString& scheme,
                                                   user_gesture));
 }
 
+blink::WebBluetooth* RenderFrameImpl::bluetooth() {
+  if (!bluetooth_) {
+    bluetooth_.reset(
+        new WebBluetoothImpl(ChildThreadImpl::current()->thread_safe_sender()));
+  }
+
+  return bluetooth_.get();
+}
+
 #if defined(ENABLE_WEBVR)
 blink::WebVRClient* RenderFrameImpl::webVRClient() {
   if (!vr_dispatcher_)