Upstream web_controller_provider and dependencies

ios/public/provider/web/web_controller_provider.h

Index: ios/public/provider/web/web_controller_provider.h
diff --git a/ios/public/provider/web/web_controller_provider.h b/ios/public/provider/web/web_controller_provider.h
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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_H_
+#define IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "ios/web/public/block_types.h"
+#include "ios/web/public/web_state/web_state_observer.h"
+#include "url/gurl.h"
+
+namespace web {
+class BrowserState;
+class WebState;
+}
+
+namespace ios {
+
+class WebControllerProviderFactory;
+
+// Setter and getter for the provider factory. The provider factory should be
+// set early, before any component using WebControllerProviders is called.
+void SetWebControllerProviderFactory(
+    WebControllerProviderFactory* provider_factory);
+WebControllerProviderFactory* GetWebControllerProviderFactory();
+
+// Interface that provides URL-loading and JavaScript injection with optional
+// dialog suppression.
+class WebControllerProvider {
+ public:
+  // Constructor for a WebControllerProvider backed by a CRWWebController
+  // initialized with |browser_state|.
+  explicit WebControllerProvider(web::BrowserState* browser_state);
+  virtual ~WebControllerProvider();
+
+  // Determines whether JavaScript dialogs are allowed.
+  virtual bool SuppressesDialogs() const;
+  virtual void SetSuppressesDialogs(bool should_suppress_dialogs) {}
+
+  // Triggers a load of |url|.
+  virtual void LoadURL(const GURL& url) {}
+
+  // Returns the WebState associated with this web controller.
+  virtual web::WebState* GetWebState() const;
+
+  // Injects |script| into the previously loaded page, if any, and calls
+  // |completion| with the result.  Calls |completion| with nil parameters
+  // when there is no previously loaded page.
+  virtual void InjectScript(const std::string& script,
+                            web::JavaScriptCompletion completion);
+};
+
+class WebControllerProviderFactory {
+ public:
+  WebControllerProviderFactory();
+  virtual ~WebControllerProviderFactory();
+
+  // Vends WebControllerProviders created using |browser_state|, passing
+  // ownership to callers.
+  virtual scoped_ptr<WebControllerProvider> CreateWebControllerProvider(
+      web::BrowserState* browser_state);
+};
+
+}  // namespace ios
+
+#endif  // IOS_PUBLIC_PROVIDER_WEB_WEB_CONTROLLER_PROVIDER_H_