Plumbing blink::Interface{Provider|Registry} through WebLocalFrame's constructor.

third_party/WebKit/Source/web/tests/ScreenWakeLockTest.cpp

Index: third_party/WebKit/Source/web/tests/ScreenWakeLockTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/ScreenWakeLockTest.cpp b/third_party/WebKit/Source/web/tests/ScreenWakeLockTest.cpp
index 997249995470aab7debb16e78f59f12943e063ca..0321bffecb153ec1de59c5435ad7750bb79f21eb 100644
--- a/third_party/WebKit/Source/web/tests/ScreenWakeLockTest.cpp
+++ b/third_party/WebKit/Source/web/tests/ScreenWakeLockTest.cpp
@@ -67,10 +67,11 @@ void MockInterfaceProvider::getInterface(const char* name,
       this, mojo::MakeRequest<WakeLockService>(std::move(handle))));
 }
 
-// A TestWebFrameClient to allow overriding the interfaceProvider() with a mock.
+// A TestWebFrameClient that overrides the blink::InterfaceProvider with a mock.
 class TestWebFrameClient : public blink::FrameTestHelpers::TestWebFrameClient {
  public:
   ~TestWebFrameClient() override = default;
+
   blink::InterfaceProvider* interfaceProvider() override {
     return &m_interfaceProvider;
   }