Move more methods from WebViewImpl to WebViewBase, and cut dependencies.

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index 31b8efb1e4a0fbcfc86b4816ed5a7c8faaa38ae7..7e866d1a03178c89f6d3dae2a3ecc70a4b844ff4 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -1770,6 +1770,10 @@ Frame* WebViewImpl::FocusedCoreFrame() const {
   return page_ ? page_->GetFocusController().FocusedOrMainFrame() : nullptr;
 }
 
+WebViewBase* WebViewBase::FromPage(Page* page) {
+  return WebViewImpl::FromPage(page);
+}
+
 WebViewImpl* WebViewImpl::FromPage(Page* page) {
   return page ? static_cast<WebViewImpl*>(page->GetChromeClient().WebView())
               : nullptr;
@@ -3725,6 +3729,10 @@ void WebViewImpl::MainFrameScrollOffsetChanged() {
   dev_tools_emulator_->MainFrameScrollOrScaleChanged();
 }
 
+bool WebViewBase::UseExternalPopupMenus() {
+  return WebViewImpl::UseExternalPopupMenus();
+}
+
 bool WebViewImpl::UseExternalPopupMenus() {
   return g_should_use_external_popup_menus;
 }