Refactor to make BlimpLocationProvider accessible to content layer.

content/public/browser/content_browser_client.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 603 matching lines @@
       const base::FilePath& storage_partition_path,
       ScopedVector<storage::FileSystemBackend>* additional_backends) {}
 
   // Allows an embedder to return its own LocationProvider implementation.
   // Return nullptr to use the default one for the platform to be created.
   // FYI: Used by an external project; please don't remove.
   // Contact Viatcheslav Ostapenko at sl.ostapenko@samsung.com for more
   // information.
   virtual LocationProvider* OverrideSystemLocationProvider();
 
+  // Allows an embedder to return its own LocationProvider to be used as
+  // its sole LocationProvider. Called when any other LocationProvider

[Charlie Reis, 2016/05/31 21:44:18]

nit: s/Called when/Should return a non-null value if/

[CJ, 2016/05/31 22:17:19]

Done.

+  // would be unsuitable.
+  virtual LocationProvider* SoleLocationProvider();

[Charlie Reis, 2016/05/31 21:44:18]

nit: GetSoleLocationProvider

[CJ, 2016/05/31 22:17:19]

Done.

+
   // Creates a new DevToolsManagerDelegate. The caller owns the returned value.
   // It's valid to return nullptr.
   virtual DevToolsManagerDelegate* GetDevToolsManagerDelegate();
 
   // Creates a new TracingDelegate. The caller owns the returned value.
   // It's valid to return nullptr.
   virtual TracingDelegate* GetTracingDelegate();
 
   // Returns true if plugin referred to by the url can use
   // pp::FileIO::RequestOSFileHandle.
@@ skipping 143 matching lines @@
   // Allows an embedder to provide its own ExternalVideoSurfaceContainer
   // implementation.  Return nullptr to disable external surface video.
   virtual ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(WebContents* web_contents);
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_