Decouple WakeLock from direct //content dependencies

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 5806c7d5893ee39570a1b3cb688c2e081bcf4e9e..28bbae0e4a417a38e502281c23450130ec88fb46 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -461,7 +461,9 @@ WebContentsImpl::WebContentsImpl(BrowserContext* browser_context)
   pepper_playback_observer_.reset(new PepperPlaybackObserver(this));
 #endif
   loader_io_thread_notifier_.reset(new LoaderIOThreadNotifier(this));
-  wake_lock_service_context_.reset(new WakeLockServiceContext(this));
+  wake_lock_service_context_.reset(new WakeLockServiceContext(
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE),
+      base::Bind(&WebContentsImpl::GetNativeView, base::Unretained(this))));
 }
 
 WebContentsImpl::~WebContentsImpl() {