Move GetDocument method from WebFrame to WebLocalFrame.

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

Index: third_party/WebKit/Source/web/tests/WebDocumentTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/WebDocumentTest.cpp b/third_party/WebKit/Source/web/tests/WebDocumentTest.cpp
index 8f431d657ebf3a89f56bb5f3f54b82cf94187201..618cce99a0a5b079c6a712ff37383e102536f546 100644
--- a/third_party/WebKit/Source/web/tests/WebDocumentTest.cpp
+++ b/third_party/WebKit/Source/web/tests/WebDocumentTest.cpp
@@ -4,12 +4,15 @@
 
 #include "public/web/WebDocument.h"
 
+#include <string>
+
 #include "core/CSSPropertyNames.h"
 #include "core/HTMLNames.h"
 #include "core/dom/NodeComputedStyle.h"
 #include "core/dom/StyleEngine.h"
 #include "core/frame/FrameTestHelpers.h"
 #include "core/frame/LocalFrame.h"
+#include "core/frame/WebLocalFrameBase.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/page/Page.h"
@@ -57,7 +60,7 @@ Document* WebDocumentTest::TopDocument() const {
 }
 
 WebDocument WebDocumentTest::TopWebDocument() const {
-  return web_view_helper_.WebView()->MainFrame()->GetDocument();
+  return web_view_helper_.WebView()->MainFrameImpl()->GetDocument();
 }
 
 TEST_F(WebDocumentTest, InsertAndRemoveStyleSheet) {