Move convertViewportToWindow and convertWindowToViewport from

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

Index: third_party/WebKit/Source/web/tests/WebFrameTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/WebFrameTest.cpp b/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
index 133eb46f16fb87fda78fcfc3e1491a31cf985f06..f4672bc204566302776e0ac963a1bbb2945d1df0 100644
--- a/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
+++ b/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
@@ -8110,6 +8110,8 @@ TEST_P(ParameterizedWebFrameTest, RemoteToLocalSwapOnMainFrameInitializesCoreFra
     // Do a remote-to-local swap of the top frame.
     FrameTestHelpers::TestWebFrameClient localClient;
     WebLocalFrame* localRoot = WebLocalFrame::createProvisional(&localClient, remoteRoot, WebSandboxFlags::None);
+    FrameTestHelpers::TestWebWidgetClient webWidgetClient;
+    WebFrameWidget::create(&webWidgetClient, localRoot);

[dcheng, 2016/09/02 08:57:39]

Would it be better to just make FrameTestHelpers do this automatically?

[lfg, 2016/09/02 17:36:38]

In this case I didn't think it was worth the effort. FrameTestHelpers already
create the widget when using the helper functions to create child frames, but in
this case we are swapping the main frame. I think this is a singular case, that
won't be reused often.

     remoteRoot->swap(localRoot);
 
     // Load a page with a child frame in the new root to make sure this doesn't