Load non-locale .pak files directly from the .apk on Android (rather than extracting on start-up).

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 <map>
 #include <string>
 #include <utility>
@@ skipping 598 matching lines @@
   // Allows programmatic opening of a new tab/window without going through
   // another WebContents. For example, from a Worker. |callback| will be
   // invoked with the appropriate WebContents* when available.
   virtual void OpenURL(BrowserContext* browser_context,
                        const OpenURLParams& params,
                        const base::Callback<void(WebContents*)>& callback);
 
   // Allows the embedder to record |metric| for a specific |url|.
   virtual void RecordURLMetric(const std::string& metric, const GURL& url) {}
 
-#if defined(OS_POSIX) && !defined(OS_MACOSX)
   // Populates |mappings| with all files that need to be mapped before launching
   // a child process.
+#if defined(OS_ANDROID)
   virtual void GetAdditionalMappedFilesForChildProcess(
       const base::CommandLine& command_line,
       int child_process_id,
-      FileDescriptorInfo* mappings) {}
-#endif
+      content::FileDescriptorInfo* mappings,
+      std::map<int, base::MemoryMappedFile::Region>* regions) {}
+#elif defined(OS_POSIX) && !defined(OS_MACOSX)
+  virtual void GetAdditionalMappedFilesForChildProcess(
+      const base::CommandLine& command_line,
+      int child_process_id,
+      content::FileDescriptorInfo* mappings) {}
+#endif  // defined(OS_ANDROID)
 
 #if defined(OS_WIN)
   // Returns the name of the dll that contains cursors and other resources.
   virtual const wchar_t* GetResourceDllName();
 
   // This is called on the PROCESS_LAUNCHER thread before the renderer process
   // is launched. It gives the embedder a chance to add loosen the sandbox
   // policy.
   virtual void PreSpawnRenderer(sandbox::TargetPolicy* policy,
                                 bool* success) {}
 #endif
 
 #if defined(VIDEO_HOLE)
   // 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_