[Web Intents] Refactor picker to use WebIntentPickerModel.

chrome/browser/ui/cocoa/web_intent_bubble_controller.mm

Index: chrome/browser/ui/cocoa/web_intent_bubble_controller.mm
diff --git a/chrome/browser/ui/cocoa/web_intent_bubble_controller.mm b/chrome/browser/ui/cocoa/web_intent_bubble_controller.mm
index 4c957cabdc6476635007d29b266ed659b7981962..1f54b1f8c1d898686d3d8b08984c307fba98e12a 100644
--- a/chrome/browser/ui/cocoa/web_intent_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/web_intent_bubble_controller.mm
@@ -75,9 +75,6 @@ const CGFloat kTextWidth = kWindowWidth - (kImageSize + kImageSpacing +
         NSPointerFunctionsStrongMemory |
         NSPointerFunctionsObjectPersonality]);
 
-    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-    defaultIcon_.reset([rb.GetNativeImageNamed(IDR_DEFAULT_FAVICON) retain]);
-
     [[self bubble] setArrowLocation:info_bubble::kTopLeft];
     [self performLayout];
     [self showWindow:nil];
@@ -240,8 +237,7 @@ const CGFloat kTextWidth = kWindowWidth - (kImageSize + kImageSpacing +
   for (NSUInteger i = 0; i < [iconImages_ count]; ++i) {
     scoped_nsobject<NSButtonCell> cell([[NSButtonCell alloc] init]);
     NSImage* image = static_cast<NSImage*>([iconImages_ pointerAtIndex:i]);
-    if (!image)
-      image = defaultIcon_;
+    DCHECK(image != NULL);
 
     // Set cell styles so it acts as image button.
     [cell setBordered:NO];