Correct const accessors in base/values.(h|cc), Part II (ListValue)

chrome/browser/ui/cocoa/chrome_to_mobile_bubble_controller.mm

 // Copyright (c) 2012 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/chrome_to_mobile_bubble_controller.h"
 
 #include "base/mac/mac_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/chrome_to_mobile_service_factory.h"
@@ skipping 86 matching lines @@
 
 // Override -[BaseBubbleController showWindow:] to set up UI elements.
 - (void)showWindow:(id)sender {
   DCHECK(service_->HasMobiles());
   service_->LogMetric(ChromeToMobileService::BUBBLE_SHOWN);
 
   // Force load the NIB.
   NSWindow* window = [self window];
 
   const ListValue* mobiles = service_->GetMobiles();
-  DictionaryValue* mobile = NULL;
+  const DictionaryValue* mobile = NULL;
   string16 name;
 
   if (mobiles->GetSize() == 1) {
     // Set the single device title; it's for multiple devices by default.
     if (mobiles->GetDictionary(0, &mobile) &&
         mobile->GetString("name", &name)) {
       NSString* title = l10n_util::GetNSStringF(
           IDS_CHROME_TO_MOBILE_BUBBLE_SINGLE_TITLE, name);
       [title_ setStringValue:title];
     } else {
@@ skipping 60 matching lines @@
 
 - (IBAction)send:(id)sender {
   // TODO(msw): Handle updates to the mobile list while the bubble is open.
   const ListValue* mobiles = service_->GetMobiles();
   // |mobileRadioGroup_| has a single row by defualt, so these always match.
   DCHECK_EQ(static_cast<NSInteger>(mobiles->GetSize()),
             [mobileRadioGroup_ numberOfRows]);
   // NSMatrix selectedRow is -1 by default (in the single mobile device case).
   const int selected_index = std::max<int>([mobileRadioGroup_ selectedRow], 0);
 
-  DictionaryValue* mobile = NULL;
+  const DictionaryValue* mobile = NULL;
   if (mobiles->GetDictionary(selected_index, &mobile)) {
     service_->SendToMobile(*mobile,
         ([sendCopy_ state] == NSOnState) ? snapshotPath_ : FilePath(),
         browser_, bridge_->AsWeakPtr());
   } else {
     NOTREACHED();
   }
 
   // Update the bubble's contents to show the "Sending..." progress animation.
   [cancel_ setEnabled:NO];
@@ skipping 88 matching lines @@
 
 - (void)setSendCopy:(bool)sendCopy {
   [sendCopy_ setState:(sendCopy ? NSOnState : NSOffState)];
 }
 
 - (ChromeToMobileBubbleNotificationBridge*)bridge {
   return bridge_.get();
 }
 
 @end  // ChromeToMobileBubbleController (JustForTesting)