[ios] Fix uses of ios::ChromeBrowserState in /ios/chrome/browser/ui/fullscreen

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=sczs@chromium.org

Bug: 1042208
Change-Id: Iaf4eb9527cdb075ddf9074e6efd7dfd7213cb9c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2014979
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734581}

ios/chrome/browser/ui/fullscreen/chrome_coordinator+fullscreen_disabling.mm

@@ -56,7 +56,7 @@ const void* const kFullscreenDisablerKey = &kFullscreenDisablerKey;
 + (instancetype)wrapperForCoordinator:(ChromeCoordinator*)coordinator {
   // ChromeCoordinators that need to disable fullscreen must be initialized with
   // a ChromeBrowserState.
-  ios::ChromeBrowserState* browserState = coordinator.browserState;
+  ChromeBrowserState* browserState = coordinator.browserState;
   DCHECK(browserState);
   // Fetch the associated wrapper.
   ScopedFullscreenDisablerWrapper* wrapper =

ios/chrome/browser/ui/fullscreen/fullscreen_controller_factory.h

@@ -8,8 +8,8 @@
 #include "base/macros.h"
 #include "base/no_destructor.h"
 #include "components/keyed_service/ios/browser_state_keyed_service_factory.h"
-#include "ios/chrome/browser/browser_state/chrome_browser_state_forward.h"
 
+class ChromeBrowserState;
 class FullscreenController;
 
 // FullscreenControllerFactory attaches FullscreenControllers to
@@ -19,7 +19,7 @@ class FullscreenControllerFactory : public BrowserStateKeyedServiceFactory {
   // Convenience getter that typecasts the value returned to a
   // FullscreenController.
   static FullscreenController* GetForBrowserState(
-      ios::ChromeBrowserState* browser_state);
+      ChromeBrowserState* browser_state);
   // Getter for singleton instance.
   static FullscreenControllerFactory* GetInstance();
 

ios/chrome/browser/ui/fullscreen/fullscreen_controller_factory.mm

@@ -18,7 +18,7 @@
 
 // static
 FullscreenController* FullscreenControllerFactory::GetForBrowserState(
-    ios::ChromeBrowserState* browser_state) {
+    ChromeBrowserState* browser_state) {
   return static_cast<FullscreenController*>(
       GetInstance()->GetServiceForBrowserState(browser_state, true));
 }

ios/chrome/browser/ui/fullscreen/test/fullscreen_app_interface.mm

@@ -28,8 +28,8 @@
   web::WebState* webState = chrome_test_util::GetCurrentWebState();
   if (!webState)
     return UIEdgeInsetsZero;
-  ios::ChromeBrowserState* browserState =
-      ios::ChromeBrowserState::FromBrowserState(webState->GetBrowserState());
+  ChromeBrowserState* browserState =
+      ChromeBrowserState::FromBrowserState(webState->GetBrowserState());
   FullscreenController* fullscreenController =
       FullscreenControllerFactory::GetForBrowserState(browserState);
   if (!fullscreenController)