[Mac] Update context menu dictionary lookup wording and placement.

content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.mm

 // Copyright 2013 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.
 
 #include "base/strings/sys_string_conversions.h"
 #import "content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.h"
 #import "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 namespace content {
 
 RenderWidgetHostViewMacDictionaryHelper::
     RenderWidgetHostViewMacDictionaryHelper(RenderWidgetHostView* view)
     : view_(static_cast<RenderWidgetHostViewMac*>(view)),
       target_view_(static_cast<RenderWidgetHostViewMac*>(view)) {
 }
 
 void RenderWidgetHostViewMacDictionaryHelper::SetTargetView(
     RenderWidgetHostView* target_view) {
   target_view_ = static_cast<RenderWidgetHostViewMac*>(target_view);
 }
 
 void RenderWidgetHostViewMacDictionaryHelper::ShowDefinitionForSelection() {
   NSRange selection_range = [view_->cocoa_view() selectedRange];
   NSAttributedString* attr_string =
       [view_->cocoa_view() attributedSubstringForProposedRange:selection_range
-                                           actualRange:nil];
+                                                   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];
@@ skipping 12 matching lines @@
   rect.origin.y += NSHeight(rect) - [font ascender];
 
   rect.origin.x += offset_.x();
   rect.origin.y += offset_.y();
 
   [target_view_->cocoa_view() showDefinitionForAttributedString:attr_string
                                                         atPoint:rect.origin];
 }
 
 }  // namespace content