Move Media Galleries FileAPI code out of webkit.

chrome/browser/chrome_content_browser_client.h

Index: chrome/browser/chrome_content_browser_client.h
diff --git a/chrome/browser/chrome_content_browser_client.h b/chrome/browser/chrome_content_browser_client.h
index 9b899a60b8a31b43a657aa6c5d72f371cc6c5b70..9a9d759cfd102f3e9e9c8d76ab7bd1ee7625668a 100644
--- a/chrome/browser/chrome_content_browser_client.h
+++ b/chrome/browser/chrome_content_browser_client.h
@@ -224,6 +224,10 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
       content::WebContents* web_contents) OVERRIDE;
   virtual void GetAdditionalAllowedSchemesForFileSystem(
       std::vector<std::string>* additional_schemes) OVERRIDE;
+  virtual void GetAdditionalFileSystemMountPointProviders(
+      const base::FilePath& partition_path,
+      ScopedVector<fileapi::FileSystemMountPointProvider>*
+          additional_providers) OVERRIDE;
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   virtual void GetAdditionalMappedFilesForChildProcess(