Add missing accessor to ios PathProvider.

ios/chrome/browser/chrome_paths.mm

Index: ios/chrome/browser/chrome_paths.mm
diff --git a/ios/chrome/browser/chrome_paths.mm b/ios/chrome/browser/chrome_paths.mm
index 0a86fb562d00c2c8d04af06aeac8fc9a5c40be71..7de53b9862217a977eb129a30932c8d0c470873c 100644
--- a/ios/chrome/browser/chrome_paths.mm
+++ b/ios/chrome/browser/chrome_paths.mm
@@ -10,6 +10,8 @@
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/threading/thread_restrictions.h"
+#include "components/gcm_driver/gcm_driver_constants.h"
+#include "ios/chrome/browser/chrome_paths_internal.h"
 
 namespace ios {
 namespace {
@@ -60,12 +62,24 @@ bool PathProvider(int key, base::FilePath* result) {
       cur = cur.Append(FILE_PATH_LITERAL("data"));
       break;
 
+    case DIR_GLOBAL_GCM_STORE:
+      if (!PathService::Get(DIR_USER_DATA, &cur))
+        return false;
+      cur = cur.Append(gcm_driver::kGCMStoreDirname);
+      break;
+
     case FILE_LOCAL_STATE:
-      if (!PathService::Get(ios::DIR_USER_DATA, &cur))
+      if (!PathService::Get(DIR_USER_DATA, &cur))
         return false;
       cur = cur.Append(FILE_PATH_LITERAL("Local State"));
       break;
 
+    case FILE_RESOURCES_PACK:
+      if (!base::PathService::Get(base::DIR_MODULE, &cur))
+        return false;
+      cur = cur.Append(FILE_PATH_LITERAL("resources.pak"));
+      break;
+
     default:
       return false;
   }
@@ -83,4 +97,24 @@ void RegisterPathProvider() {
   PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
 }
 
+void GetUserCacheDirectory(const base::FilePath& browser_state_dir,
+                           base::FilePath* result) {
+  // If the browser state directory is under ~/Library/Application Support,
+  // use a suitable cache directory under ~/Library/Caches.
+
+  // Default value in cases where any of the following fails.
+  *result = browser_state_dir;
+
+  base::FilePath app_data_dir;
+  if (!PathService::Get(base::DIR_APP_DATA, &app_data_dir))
+    return;
+  base::FilePath cache_dir;
+  if (!PathService::Get(base::DIR_CACHE, &cache_dir))
+    return;
+  if (!app_data_dir.AppendRelativePath(browser_state_dir, &cache_dir))
+    return;
+
+  *result = cache_dir;
+}
+
 }  // namespace ios