Upstream Chrome on iOS source code [2/11].

ios/chrome/browser/tabs/tab_snapshotting_delegate.h

Index: ios/chrome/browser/tabs/tab_snapshotting_delegate.h
diff --git a/ios/chrome/browser/tabs/tab_snapshotting_delegate.h b/ios/chrome/browser/tabs/tab_snapshotting_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..aaf8b48d4996020a2fecc63d495b8cee5e34b01d
--- /dev/null
+++ b/ios/chrome/browser/tabs/tab_snapshotting_delegate.h
@@ -0,0 +1,21 @@
+// Copyright 2014 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_CHROME_BROWSER_TABS_TAB_SNAPSHOTTING_DELEGATE_H_
+#define IOS_CHROME_BROWSER_TABS_TAB_SNAPSHOTTING_DELEGATE_H_
+
+#import <UIKit/UIKit.h>
+
+@class Tab;
+
+// A protocol implemented by a snapshotting delegate of Tab.
+@protocol TabSnapshottingDelegate
+
+// Returns the rect (in the |tab.webController.view|'s coordinate space) that is
+// used to render the page's content.
+- (CGRect)snapshotContentAreaForTab:(Tab*)tab;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_TABS_TAB_SNAPSHOTTING_DELEGATE_H_