Implement "Look Up In Dictionary" context menu item asynchronously. (OS X)

content/browser/renderer_host/text_input_client_mac.h

Index: content/browser/renderer_host/text_input_client_mac.h
diff --git a/content/browser/renderer_host/text_input_client_mac.h b/content/browser/renderer_host/text_input_client_mac.h
index d682ebdf60e6ae1eabd7084680de97b7d27aeba3..02d6014202675ffebc53944cc333144393a026fd 100644
--- a/content/browser/renderer_host/text_input_client_mac.h
+++ b/content/browser/renderer_host/text_input_client_mac.h
@@ -73,16 +73,31 @@ class CONTENT_EXPORT TextInputClientMac {
 
   // This async method is invoked from RenderWidgetHostViewCocoa's
   // -quickLookWithEvent:, when the user taps a word using 3 fingers.
-  // The reply callback will be invoked from the IO thread, the caller is
+  // The reply callback will be invoked from the IO thread; the caller is
   // responsible for bouncing to the main thread if necessary.
   // The callback parameters provide the attributed word under the point and
   // the lower left baseline point of the text.
   void GetStringAtPoint(RenderWidgetHost* rwh,
                         gfx::Point point,
-                        void (^replyHandler)(NSAttributedString*, NSPoint));
+                        void (^reply_handler)(NSAttributedString*, NSPoint));
+
   // This is called on the IO thread when we get the renderer's reply for
   // GetStringAtPoint.
-  void GetStringAtPointReply(NSAttributedString*, NSPoint);
+  void GetStringAtPointReply(NSAttributedString* string, NSPoint point);
+
+  // This async method is invoked when browser tries to retreive the text for
+  // certain range and doesn't want to wait for the reply from blink.
+  // The reply callback will be invoked from the IO thread; the caller is
+  // responsible for bouncing to the main thread if necessary.
+  // The callback parameters provide the attributed word under the point and
+  // the lower left baseline point of the text.
+  void GetStringFromRange(RenderWidgetHost* rwh,
+                          NSRange range,
+                          void (^reply_handler)(NSAttributedString*, NSPoint));
+
+  // This is called on the IO thread when we get the renderer's reply for
+  // GetStringFromRange.
+  void GetStringFromRangeReply(NSAttributedString* string, NSPoint point);
 
  private:
   friend struct base::DefaultSingletonTraits<TextInputClientMac>;
@@ -105,7 +120,13 @@ class CONTENT_EXPORT TextInputClientMac {
   base::Lock lock_;
   base::ConditionVariable condition_;
 
-  base::mac::ScopedBlock<void(^)(NSAttributedString*, NSPoint)> replyHandler_;
+  // The callback when received IPC TextInputClientReplyMsg_GotStringAtPoint.
+  base::mac::ScopedBlock<void(^)(NSAttributedString*, NSPoint)>
+      replyForPointHandler_;
+
+  // The callback when received IPC TextInputClientReplyMsg_GotStringForRange.
+  base::mac::ScopedBlock<void(^)(NSAttributedString*, NSPoint)>
+      replyForRangeHandler_;
 
   DISALLOW_COPY_AND_ASSIGN(TextInputClientMac);
 };