chrome: Cleanup class/struct forward declarations

chrome/browser/profiles/profile.h

Index: chrome/browser/profiles/profile.h
diff --git a/chrome/browser/profiles/profile.h b/chrome/browser/profiles/profile.h
index 2f25d0265831ac1409e69550899eac6233e914b0..8c0106d22c58cb961a929607898d06aa722c1af5 100644
--- a/chrome/browser/profiles/profile.h
+++ b/chrome/browser/profiles/profile.h
@@ -17,21 +17,13 @@
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/content_browser_client.h"
 
-class ChromeAppCacheService;
 class ChromeZoomLevelPrefs;
 class DevToolsNetworkControllerHandle;
 class ExtensionSpecialStoragePolicy;
-class HostContentSettingsMap;
 class PrefProxyConfigTracker;
 class PrefService;
-class PromoCounter;
-class ProtocolHandlerRegistry;
 class TestingProfile;
 
-namespace android {
-class TabContentsProvider;
-}
-
 namespace base {
 class SequencedTaskRunner;
 class Time;
@@ -41,19 +33,10 @@ namespace chrome_browser_net {
 class Predictor;
 }
 
-namespace chromeos {
-class LibCrosServiceLibraryImpl;
-class ResetDefaultProxyConfigServiceTask;
-}
-
 namespace content {
 class WebUI;
 }
 
-namespace storage {
-class FileSystemContext;
-}
-
 namespace net {
 class SSLConfigService;
 }