Revert of Implement "Look Up In Dictionary" context menu item asynchronously.

content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm

Index: content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm b/content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm
index 69e99227575ed403a9c13973cc0aef403c290f7c..92f10bc2688d6d9e84c2a68b9bc772205fc97c83 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm
@@ -22,12 +22,38 @@
 
 void RenderWidgetHostViewMacDictionaryHelper::ShowDefinitionForSelection() {
   NSRange selection_range = [view_->cocoa_view() selectedRange];
+  NSAttributedString* attr_string =
+      [view_->cocoa_view() attributedSubstringForProposedRange:selection_range
+                                                   actualRange:nil];
+  if (!attr_string) {
+    if (view_->selected_text().empty())
+      return;
+    // The PDF plugin does not support getting the attributed string. Until it
+    // does, use NSPerformService(), which opens Dictionary.app.
+    // http://crbug.com/152438
+    // TODO(asvitkine): This should be removed after the above support is added.
+    NSString* text = base::SysUTF8ToNSString(view_->selected_text());
+    NSPasteboard* pasteboard = [NSPasteboard pasteboardWithUniqueName];
+    NSArray* types = [NSArray arrayWithObject:NSStringPboardType];
+    [pasteboard declareTypes:types owner:nil];
+    if ([pasteboard setString:text forType:NSStringPboardType])
+      NSPerformService(@"Look Up in Dictionary", pasteboard);
+    return;
+  }
+
   NSRect rect =
       [view_->cocoa_view() firstViewRectForCharacterRange:selection_range
                                               actualRange:nil];
+
+  NSDictionary* attrs = [attr_string attributesAtIndex:0 effectiveRange:nil];
+  NSFont* font = [attrs objectForKey:NSFontAttributeName];
+  rect.origin.y += NSHeight(rect) - [font ascender];
+
   rect.origin.x += offset_.x();
-  rect.origin.y += NSHeight(rect) + offset_.y();
-  [view_->cocoa_view() showLookUpDictionaryOverlayAtPoint:rect.origin];
+  rect.origin.y += offset_.y();
+
+  [target_view_->cocoa_view() showDefinitionForAttributedString:attr_string
+                                                        atPoint:rect.origin];
 }
 
 }  // namespace content