[Mac] Added tooltip support for web intent picker

chrome/browser/ui/cocoa/web_intent_bubble_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/web_intent_bubble_controller.h"
 
 #include "base/memory/scoped_nsobject.h"
 #include "chrome/browser/ui/browser_list.h"
 #import "chrome/browser/ui/cocoa/info_bubble_view.h"
 #import "chrome/browser/ui/cocoa/info_bubble_window.h"
@@ skipping 63 matching lines @@
 
     [[self bubble] setArrowLocation:info_bubble::kTopLeft];
     [self performLayout];
     [self showWindow:nil];
     picker_->set_controller(self);
   }
 
   return self;
 }
 
+- (void)setServiceURLs:(NSArray*)urls {
+  serviceURLs_.reset([urls retain]);
+
+  if ([iconImages_ count] < [serviceURLs_ count])
+    [iconImages_ setCount:[serviceURLs_ count]];
+
+  [self performLayout];
+}
+
 - (void)replaceImageAtIndex:(size_t)index withImage:(NSImage*)image {
   if ([iconImages_ count] <= index)
     [iconImages_ setCount:index + 1];
 
   [iconImages_ replacePointerAtIndex:index withPointer:image];
   [self performLayout];
 }
 
 // We need to watch for window closing so we can notify up via |picker_|.
 - (void)windowWillClose:(NSNotification*)notification {
@@ skipping 131 matching lines @@
     [cell setBordered:NO];
     [cell setImage:image];
     [cell setImagePosition:NSImageOnly];
     [cell setButtonType:NSMomentaryChangeButton];
     [cell setTarget:self];
     [cell setAction:@selector(invokeService:)];
     [cell setTag:i];
     [cell setEnabled:YES];
 
     [matrix putCell:cell atRow:(i / iconsPerRow) column:(i % iconsPerRow)];
+    if (serviceURLs_ && [serviceURLs_ count] >= i)
+      [matrix setToolTip:[serviceURLs_ objectAtIndex:i] forCell:cell];
   }
 
   [subviews addObject:matrix];
   return NSHeight([matrix frame]);
 }
 
 // Layout the contents of the picker bubble.
 - (void)performLayout {
   // |offset| is the Y position that should be drawn at next.
   CGFloat offset = kFramePadding + info_bubble::kBubbleArrowHeight;
@@ skipping 12 matching lines @@
   NSRect frame = [[self window] frame];
   frame.size.height = offset;
   frame.size.width = kWindowWidth;
   [[self window] setFrame:frame display:YES];
 
   // Replace the window's content.
   [[[self window] contentView] setSubviews:subviews];
 }
 
 @end  // WebIntentBubbleController