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

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=jlebel@chromium.org

Bug: 1042208
Change-Id: Id538e6401c0bb27e206b9288ba8c55a37c5d3d3d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2015254
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Jérôme Lebel <jlebel@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735299}

ios/chrome/browser/ui/first_run/first_run_util.h

@@ -7,8 +7,7 @@
 
 #import <UIKit/UIKit.h>
 
-#include "ios/chrome/browser/browser_state/chrome_browser_state_forward.h"
-
+class ChromeBrowserState;
 @class FirstRunConfiguration;
 @protocol SyncPresenter;
 
@@ -39,13 +38,12 @@ BOOL FixOrphanWord(UILabel* label);
 // only after a successful sign-in or explicitly skipping signing in. First Run
 // metrics are recorded iff the sentinel file didn't previous exist and was
 // successfully created.
-void WriteFirstRunSentinelAndRecordMetrics(
-    ios::ChromeBrowserState* browserState,
+void WriteFirstRunSentinelAndRecordMetrics(ChromeBrowserState* browserState,
                                            BOOL sign_in_attempted,
                                            BOOL has_sso_account);
 
 // Methods for writing sentinel and recording metrics and posting notifications
-void FinishFirstRun(ios::ChromeBrowserState* browserState,
+void FinishFirstRun(ChromeBrowserState* browserState,
                     web::WebState* web_state,
                     FirstRunConfiguration* config,
                     id<SyncPresenter> presenter);
@@ -59,7 +57,7 @@ void FirstRunDismissed();
 
 // Enables or disables the data reduction proxy and also sets a key indicating
 // application is using Data Reduction Proxy.
-void SetDataReductionProxyEnabled(ios::ChromeBrowserState* browserState,
+void SetDataReductionProxyEnabled(ChromeBrowserState* browserState,
                                   BOOL enabled,
                                   BOOL toggled_switch);
 

ios/chrome/browser/ui/first_run/first_run_util.mm

@@ -89,7 +89,7 @@ void CreateSentinel() {
 }
 
 // Helper function for recording first run metrics.
-void RecordFirstRunMetricsInternal(ios::ChromeBrowserState* browserState,
+void RecordFirstRunMetricsInternal(ChromeBrowserState* browserState,
                                    bool sign_in_attempted,
                                    bool has_sso_accounts) {
   first_run::SignInStatus sign_in_status;
@@ -140,8 +140,7 @@ BOOL FixOrphanWord(UILabel* label) {
   return false;
 }
 
-void WriteFirstRunSentinelAndRecordMetrics(
-    ios::ChromeBrowserState* browserState,
+void WriteFirstRunSentinelAndRecordMetrics(ChromeBrowserState* browserState,
                                            BOOL sign_in_attempted,
                                            BOOL has_sso_account) {
   base::PostTask(
@@ -152,7 +151,7 @@ void WriteFirstRunSentinelAndRecordMetrics(
                                 has_sso_account);
 }
 
-void FinishFirstRun(ios::ChromeBrowserState* browserState,
+void FinishFirstRun(ChromeBrowserState* browserState,
                     web::WebState* web_state,
                     FirstRunConfiguration* config,
                     id<SyncPresenter> presenter) {

ios/chrome/browser/ui/first_run/static_file_view_controller.h

@@ -7,7 +7,7 @@
 
 #import <UIKit/UIKit.h>
 
-#include "ios/chrome/browser/browser_state/chrome_browser_state_forward.h"
+class ChromeBrowserState;
 
 // Status for tapped links.  This enum is used in UMA and entries should not be
 // re-ordered or deleted.
@@ -24,7 +24,7 @@ enum MobileFreLinkTappedStatus {
 
 // Initializes with the given URL to display and browser state. Neither
 // |browserState| nor |URL| may be nil.
-- (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
+- (instancetype)initWithBrowserState:(ChromeBrowserState*)browserState
                                  URL:(NSURL*)URL;
 
 // The status of the load.

ios/chrome/browser/ui/first_run/static_file_view_controller.mm

@@ -21,7 +21,7 @@
 
 @interface StaticFileViewController ()<UIScrollViewDelegate,
                                        WKNavigationDelegate> {
-  ios::ChromeBrowserState* _browserState;  // weak
+  ChromeBrowserState* _browserState;  // weak
   NSURL* _URL;
   // YES if the header has been configured for RTL.
   BOOL _headerLaidOutForRTL;
@@ -40,7 +40,7 @@
 
 @synthesize loadStatus = _loadStatus;
 
-- (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
+- (instancetype)initWithBrowserState:(ChromeBrowserState*)browserState
                                  URL:(NSURL*)URL {
   DCHECK(browserState);
   DCHECK(URL);