Implement Mac Pop-up Dictionary for OOPIF.

third_party/WebKit/public/web/mac/WebSubstringUtil.h

Index: third_party/WebKit/public/web/mac/WebSubstringUtil.h
diff --git a/third_party/WebKit/public/web/mac/WebSubstringUtil.h b/third_party/WebKit/public/web/mac/WebSubstringUtil.h
index 29c9cdd24f2f73d09f49848938116d63811b772a..de2469cdd00743afee711f3ea791598ad1e09b63 100644
--- a/third_party/WebKit/public/web/mac/WebSubstringUtil.h
+++ b/third_party/WebKit/public/web/mac/WebSubstringUtil.h
@@ -32,7 +32,6 @@
 #define WebSubstringUtil_h
 
 #include "../../platform/WebCommon.h"
-#include "public/web/WebFrame.h"
 
 #if __OBJC__
 @class NSAttributedString;
@@ -42,16 +41,18 @@ class NSAttributedString;
 
 namespace blink {
 
-class WebView;
+class WebFrameWidget;
+class WebLocalFrame;

[dcheng, 2016/09/21 00:38:34]

Nit: remove this, it appears unused.

[EhsanK, 2016/09/23 15:16:59]

Actually, I think they are all needed here since there is references as function
arguments.

 struct WebPoint;
 
 class WebSubstringUtil {
 public:
     // Returns an autoreleased NSAttributedString that is the word under
-    // the given point, or nil on error.
+    // the given point inside the given WebFrameWidget or nil on error.
     // Upon return, |baselinePoint| is set to the left baseline point in
     // AppKit coordinates.
-    BLINK_EXPORT static NSAttributedString* attributedWordAtPoint(WebView*,
+    BLINK_EXPORT static NSAttributedString* attributedWordAtPoint(
+        WebFrameWidget*,
         WebPoint,
         WebPoint& baselinePoint);