[Mac] Implement the system dictionary popup by implementing NSTextInput methods.

chrome/browser/renderer_host/render_widget_host_view_mac.h

Index: chrome/browser/renderer_host/render_widget_host_view_mac.h
diff --git a/chrome/browser/renderer_host/render_widget_host_view_mac.h b/chrome/browser/renderer_host/render_widget_host_view_mac.h
index 0ddfbbab5b4c39f518c095960a1c6087334ead98..e35d95afe618f04e4df6fa4f08377dfea45bca8a 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_mac.h
+++ b/chrome/browser/renderer_host/render_widget_host_view_mac.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -73,12 +73,6 @@ class RWHVMEditCommandHelper;
   // Represents the input-method attributes supported by this object.
   scoped_nsobject<NSArray> validAttributesForMarkedText_;
 
-  // Represents the cursor position in this view coordinate.
-  // The renderer sends the cursor position through an IPC message.
-  // We save the latest cursor position here and return it when an input
-  // methods needs it.
-  NSRect caretRect_;
-
   // Indicates if we are currently handling a key down event.
   BOOL handlingKeyDown_;
 
@@ -124,8 +118,6 @@ class RWHVMEditCommandHelper;
   int pluginImeIdentifier_;
 }
 
-@property(assign, nonatomic) NSRect caretRect;
-
 - (void)setCanBeKeyView:(BOOL)can;
 - (void)setTakesFocusOnlyOnMouseDown:(BOOL)b;
 - (void)setCloseOnDeactivate:(BOOL)b;