[ios] Fix uses of ios::ChromeBrowserState in...

[ios] Fix uses of ios::ChromeBrowserState in /ios/chrome/browser/ui/browser_view/browser_view_controller.h

The ChromeBrowserState has been moved from the "ios" namespace
to the global namespace by http://crrev.com/c/2014913. Fix the
uses from ios::ChromeBrowserState to ChromeBrowserState.

Also remove includes of chrome_browser_state_forward.h and use
a simple forward declaration instead (since the old name is no
longer necessary).

This CL was uploaded by git cl split.

R=gambard@chromium.org

Bug: 1042208
Change-Id: I93ed83ef713fb87dcf730a8a40c28a7df9428c1a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2017523Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734957}

ios/chrome/browser/ui/browser_view/browser_view_controller.h

@@ -8,13 +8,13 @@
 #import <UIKit/UIKit.h>
 
 #import "base/ios/block_types.h"
-#include "ios/chrome/browser/browser_state/chrome_browser_state_forward.h"
 #import "ios/chrome/browser/ui/page_info/requirements/page_info_presentation.h"
 #import "ios/chrome/browser/ui/settings/sync/utils/sync_presenter.h"
 #import "ios/chrome/browser/ui/toolbar/toolbar_coordinator_delegate.h"
 #import "ios/public/provider/chrome/browser/voice/logo_animation_controller.h"
 
 class Browser;
+class ChromeBrowserState;
 @protocol ApplicationCommands;
 @protocol BrowserCommands;
 @protocol BrowsingDataCommands;
@@ -83,7 +83,7 @@ class Browser;
 @property(nonatomic, weak, readonly) TabModel* tabModel;
 
 // The Browser's ChromeBrowserState.
-@property(nonatomic, assign, readonly) ios::ChromeBrowserState* browserState;
+@property(nonatomic, assign, readonly) ChromeBrowserState* browserState;
 
 // Whether the receiver is currently the primary BVC.
 - (void)setPrimary:(BOOL)primary;