Rename initial_pos to initial_rect in ShowWidget and ShowView IPCs.

ui/web_dialogs/web_dialog_delegate.h

Index: ui/web_dialogs/web_dialog_delegate.h
diff --git a/ui/web_dialogs/web_dialog_delegate.h b/ui/web_dialogs/web_dialog_delegate.h
index 898b04513d416765bead45344e6eb560028e3dbd..6d2079d35ad2cab461b4391ebb7287f07833a12f 100644
--- a/ui/web_dialogs/web_dialog_delegate.h
+++ b/ui/web_dialogs/web_dialog_delegate.h
@@ -120,13 +120,13 @@ class WEB_DIALOGS_EXPORT WebDialogDelegate {
 
   // A callback to create a new tab with |new_contents|. |source| is the
   // WebContent where the operation originated. |disposition| controls how the
-  // new tab should be opened. |initial_pos| is the position of the window if a
-  // new window is created. |user_gesture| is true if the operation was started
-  // by a user gesture. Return false to use the default handler.
+  // new tab should be opened. |initial_rect| is the position and size of the
+  // window if a new window is created. |user_gesture| is true if the operation
+  // was started by a user gesture. Return false to use the default handler.
   virtual bool HandleAddNewContents(content::WebContents* source,
                                     content::WebContents* new_contents,
                                     WindowOpenDisposition disposition,
-                                    const gfx::Rect& initial_pos,
+                                    const gfx::Rect& initial_rect,
                                     bool user_gesture);
 
   // A callback to control whether a WebContents will be created. Returns