mac: Add support for asynchronous dictionary lookup

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 53318f95cb5bb49efe6403fe3bb62a05cbce2538..310a5763cba0fb9d543a6330347f4d37abdc5e77 100644
--- a/content/browser/renderer_host/text_input_client_mac.h
+++ b/content/browser/renderer_host/text_input_client_mac.h
@@ -37,6 +37,11 @@ class CONTENT_EXPORT TextInputClientMac {
   // Returns the singleton instance.
   static TextInputClientMac* GetInstance();
 
+  void GetStringAtPoint(RenderWidgetHost* rwh,
+                        gfx::Point point,
+                        void (^replyHandler)(NSAttributedString*, NSRect));
+  void GetStringAtPointReply(NSAttributedString*, NSRect);
+
   // Each of the three methods mentioned above has an associated pair of methods
   // to get data from the renderer. The Get*() methods block the calling thread
   // (always the UI thread) with a short timeout after the async message has
@@ -82,6 +87,8 @@ class CONTENT_EXPORT TextInputClientMac {
   base::Lock lock_;
   base::ConditionVariable condition_;
 
+  void (^replyHandler_)(NSAttributedString*, NSRect);

[Avi (use Gerrit), 2014/02/18 21:42:25]

Don't use raw pointers if possible. ScopedBlock?

+
   DISALLOW_COPY_AND_ASSIGN(TextInputClientMac);
 };