Add PlatformLocalFrame class.

third_party/WebKit/Source/web/ValidationMessageClientImpl.cpp

Index: third_party/WebKit/Source/web/ValidationMessageClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/ValidationMessageClientImpl.cpp b/third_party/WebKit/Source/web/ValidationMessageClientImpl.cpp
index 882665e0c43537f07136788ccf66274647ccb951..62addb17c6802340eaf0aec4d78e4553f18adab8 100644
--- a/third_party/WebKit/Source/web/ValidationMessageClientImpl.cpp
+++ b/third_party/WebKit/Source/web/ValidationMessageClientImpl.cpp
@@ -29,6 +29,7 @@
 #include "core/dom/TaskRunnerHelper.h"
 #include "core/exported/WebViewBase.h"
 #include "core/frame/FrameView.h"
+#include "core/frame/LocalFrame.h"
 #include "core/page/ChromeClient.h"
 #include "platform/PlatformChromeClient.h"
 #include "platform/wtf/CurrentTime.h"
@@ -74,8 +75,8 @@ void ValidationMessageClientImpl::ShowValidationMessage(
   IntRect anchor_in_viewport =
       CurrentView()->ContentsToViewport(anchor.PixelSnappedBoundingBox());
   last_anchor_rect_in_screen_ =
-      CurrentView()->GetChromeClient()->ViewportToScreen(anchor_in_viewport,
-                                                         CurrentView());
+      CurrentView()->GetChromeClient()->ViewportToScreen(
+          anchor_in_viewport, current_anchor_->GetDocument().GetFrame());
   last_page_scale_factor_ = web_view_.PageScaleFactor();
   message_ = message;
   const double kMinimumSecondToShowValidationMessage = 5.0;
@@ -141,7 +142,8 @@ void ValidationMessageClientImpl::CheckAnchorStatus(TimerBase*) {
 
   IntRect new_anchor_rect_in_viewport_in_screen =
       CurrentView()->GetChromeClient()->ViewportToScreen(
-          new_anchor_rect_in_viewport, CurrentView());
+          new_anchor_rect_in_viewport,
+          current_anchor_->GetDocument().GetFrame());
   if (new_anchor_rect_in_viewport_in_screen == last_anchor_rect_in_screen_ &&
       web_view_.PageScaleFactor() == last_page_scale_factor_)
     return;