Move Get/SetScrollOffset methods from WebFrame to WebLocalFrame.

third_party/WebKit/Source/core/frame/FullscreenController.cpp

Index: third_party/WebKit/Source/core/frame/FullscreenController.cpp
diff --git a/third_party/WebKit/Source/core/frame/FullscreenController.cpp b/third_party/WebKit/Source/core/frame/FullscreenController.cpp
index bac937c32b0fd398e9873bd8c6f64d27b2a32be2..ce21bdb161d574109a03a120b6d4709a446d626c 100644
--- a/third_party/WebKit/Source/core/frame/FullscreenController.cpp
+++ b/third_party/WebKit/Source/core/frame/FullscreenController.cpp
@@ -74,7 +74,7 @@ void FullscreenController::DidEnterFullscreen() {
   UpdatePageScaleConstraints(false);
   web_view_base_->SetPageScaleFactor(1.0f);
   if (web_view_base_->MainFrame()->IsWebLocalFrame())
-    web_view_base_->MainFrame()->SetScrollOffset(WebSize());
+    web_view_base_->MainFrame()->ToWebLocalFrame()->SetScrollOffset(WebSize());
   web_view_base_->SetVisualViewportOffset(FloatPoint());
 
   state_ = State::kFullscreen;
@@ -153,7 +153,7 @@ void FullscreenController::EnterFullscreen(LocalFrame& frame) {
     initial_page_scale_factor_ = web_view_base_->PageScaleFactor();
     initial_scroll_offset_ =
         web_view_base_->MainFrame()->IsWebLocalFrame()
-            ? web_view_base_->MainFrame()->GetScrollOffset()
+            ? web_view_base_->MainFrame()->ToWebLocalFrame()->GetScrollOffset()
             : WebSize();
     initial_visual_viewport_offset_ = web_view_base_->VisualViewportOffset();
     initial_background_color_override_enabled_ =
@@ -261,7 +261,7 @@ void FullscreenController::DidUpdateLayout() {
 
   web_view_base_->SetPageScaleFactor(initial_page_scale_factor_);
   if (web_view_base_->MainFrame()->IsWebLocalFrame()) {
-    web_view_base_->MainFrame()->SetScrollOffset(
+    web_view_base_->MainFrame()->ToWebLocalFrame()->SetScrollOffset(
         WebSize(initial_scroll_offset_));
   }
   web_view_base_->SetVisualViewportOffset(initial_visual_viewport_offset_);