Disable zoom bubble for PDF extension.

chrome/browser/extensions/extension_util.h

 // Copyright 2013 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 CHROME_BROWSER_EXTENSIONS_EXTENSION_UTIL_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_UTIL_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 34 matching lines @@
 
 // Returns true if |extension| can see events and data from another sub-profile
 // (incognito to original profile, or vice versa).
 bool CanCrossIncognito(const extensions::Extension* extension,
                        content::BrowserContext* context);
 
 // Returns true if |extension| can be loaded in incognito.
 bool CanLoadInIncognito(const extensions::Extension* extension,
                         content::BrowserContext* context);
 
+// Returns true if the |extension| should not trigger a zoom bubble.
+bool ZoomWithoutBubble(const Extension* extension);
+
 // Returns true if this extension can inject scripts into pages with file URLs.
 bool AllowFileAccess(const std::string& extension_id,
                      content::BrowserContext* context);
 
 // Sets whether |extension_id| can inject scripts into pages with file URLs.
 // Reloads the extension if it's enabled since this permission is applied at
 // loading time only. Note than an ExtensionService must exist.
 void SetAllowFileAccess(const std::string& extension_id,
                         content::BrowserContext* context,
                         bool allow);
@@ skipping 68 matching lines @@
 bool IsExtensionSupervised(const Extension* extension, Profile* profile);
 
 // Returns true if supervised users need approval from their custodian for
 // approving escalated permissions on updated extensions.
 bool NeedCustodianApprovalForPermissionIncrease();
 
 }  // namespace util
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_UTIL_H_