Split content script injections into multiple tasks

third_party/WebKit/Source/web/SuspendableScriptExecutor.h

Index: third_party/WebKit/Source/web/SuspendableScriptExecutor.h
diff --git a/third_party/WebKit/Source/web/SuspendableScriptExecutor.h b/third_party/WebKit/Source/web/SuspendableScriptExecutor.h
index 34f5477682f974fbb44bb97d1b3ddadb9db8d116..095926525cc0144701d6d65cd79c86ab72c6bc5e 100644
--- a/third_party/WebKit/Source/web/SuspendableScriptExecutor.h
+++ b/third_party/WebKit/Source/web/SuspendableScriptExecutor.h
@@ -24,11 +24,14 @@ class SuspendableScriptExecutor final
   USING_GARBAGE_COLLECTED_MIXIN(SuspendableScriptExecutor);
 
  public:
-  static void createAndRun(LocalFrame*,
-                           int worldID,
-                           const HeapVector<ScriptSourceCode>& sources,
-                           bool userGesture,
-                           WebScriptExecutionCallback*);
+  enum BlockingOption { NonBlocking, OnloadBlocking };
+
+  static SuspendableScriptExecutor* create(
+      LocalFrame*,
+      int worldID,
+      const HeapVector<ScriptSourceCode>& sources,
+      bool userGesture,
+      WebScriptExecutionCallback*);
   static void createAndRun(LocalFrame*,
                            v8::Isolate*,
                            v8::Local<v8::Context>,
@@ -39,6 +42,8 @@ class SuspendableScriptExecutor final
                            WebScriptExecutionCallback*);
   ~SuspendableScriptExecutor() override;
 
+  void run();
+  void runAsync(BlockingOption);
   void contextDestroyed(ExecutionContext*) override;
 
   DECLARE_VIRTUAL_TRACE();
@@ -60,12 +65,12 @@ class SuspendableScriptExecutor final
 
   void fired() override;
 
-  void run();
   void executeAndDestroySelf();
   void dispose();
 
   RefPtr<ScriptState> m_scriptState;
   WebScriptExecutionCallback* m_callback;
+  BlockingOption m_blockingOption;
 
   SelfKeepAlive<SuspendableScriptExecutor> m_keepAlive;