Remove the experimental navigator.storageQuota API

third_party/WebKit/Source/modules/quota/StorageQuotaClient.h

Index: third_party/WebKit/Source/modules/quota/StorageQuotaClient.h
diff --git a/third_party/WebKit/Source/modules/quota/StorageQuotaClient.h b/third_party/WebKit/Source/modules/quota/StorageQuotaClient.h
index d0962d9ddef874d0b749ebeb797503f884be070a..7d2d9228b087e7ed2d96a5704137d1efb71a6069 100644
--- a/third_party/WebKit/Source/modules/quota/StorageQuotaClient.h
+++ b/third_party/WebKit/Source/modules/quota/StorageQuotaClient.h
@@ -42,8 +42,6 @@ namespace blink {
 
 class ExecutionContext;
 class Page;
-class ScriptPromise;
-class ScriptState;
 class StorageErrorCallback;
 class StorageQuotaCallback;
 
@@ -59,9 +57,6 @@ class StorageQuotaClient : public Supplement<Page> {
                             unsigned long long newQuotaInBytes,
                             StorageQuotaCallback*,
                             StorageErrorCallback*) = 0;
-  virtual ScriptPromise requestPersistentQuota(
-      ScriptState*,
-      unsigned long long newQuotaInBytes) = 0;
 
   static const char* supplementName();
   static StorageQuotaClient* from(ExecutionContext*);