Remove ChromeBrowserProvider::GetFaviconForURL().

ios/chrome/browser/favicon/favicon_client_impl.h

Index: ios/chrome/browser/favicon/favicon_client_impl.h
diff --git a/ios/chrome/browser/favicon/favicon_client_impl.h b/ios/chrome/browser/favicon/favicon_client_impl.h
index 3874fb5dbb941d04edaf3c4848defa2288dbef8d..06803030aa08809a2dceaa1279b214e96f63983f 100644
--- a/ios/chrome/browser/favicon/favicon_client_impl.h
+++ b/ios/chrome/browser/favicon/favicon_client_impl.h
@@ -12,16 +12,12 @@
 #include "components/favicon/core/favicon_client.h"
 #include "components/favicon_base/favicon_callback.h"
 
-namespace ios {
-class ChromeBrowserState;
-}
-
 class GURL;
 
 // FaviconClientImpl implements the favicon::FaviconClient interface on iOS.
 class FaviconClientImpl : public favicon::FaviconClient {
  public:
-  FaviconClientImpl(ios::ChromeBrowserState* browser_state);
+  FaviconClientImpl();
   ~FaviconClientImpl() override;
 
  private:
@@ -33,8 +29,6 @@ class FaviconClientImpl : public favicon::FaviconClient {
       const favicon_base::FaviconResultsCallback& callback,
       base::CancelableTaskTracker* tracker) override;
 
-  ios::ChromeBrowserState* browser_state_;
-
   DISALLOW_COPY_AND_ASSIGN(FaviconClientImpl);
 };