ChromeOS: Use file extensions in Files app to decide which apps to use.

chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.cc

Index: chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.cc b/chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.cc
index 9a0175d3bee81779019f93e338ac4550fafd7f15..39a6c7d2597b74ef5514aff113b8009c1651563c 100644
--- a/chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.cc
+++ b/chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.cc
@@ -83,7 +83,8 @@
 #include "webkit/fileapi/file_system_url.h"
 #include "webkit/fileapi/file_system_util.h"
 
-using extensions::app_file_handler_util::FindFileHandlersForMimeTypes;
+using extensions::app_file_handler_util::FindFileHandlersForFiles;
+using extensions::app_file_handler_util::PathAndMimeTypeSet;
 using chromeos::disks::DiskMountManager;
 using content::BrowserContext;
 using content::BrowserThread;
@@ -393,7 +394,7 @@ void FillDriveEntryPropertiesValue(
 }
 
 void GetMimeTypesForFileURLs(const std::vector<base::FilePath>& file_paths,
-                             std::set<std::string>* mime_types) {
+                             PathAndMimeTypeSet* files) {
   for (std::vector<base::FilePath>::const_iterator iter = file_paths.begin();
        iter != file_paths.end(); ++iter) {
     const base::FilePath::StringType file_extension =
@@ -409,9 +410,9 @@ void GetMimeTypesForFileURLs(const std::vector<base::FilePath>& file_paths,
       // If the file doesn't have an extension or its mime-type cannot be
       // determined, then indicate that it has the empty mime-type. This will
       // only be matched if the Web Intents accepts "*" or "*/*".
-      mime_types->insert("");
+      files->insert(std::make_pair(*iter, ""));
     } else {
-      mime_types->insert(mime_type);
+      files->insert(std::make_pair(*iter, mime_type));
     }
   }
 }
@@ -898,8 +899,8 @@ bool GetFileTasksFileBrowserFunction::FindAppTasks(
   if (!service)
     return false;
 
-  std::set<std::string> mime_types;
-  GetMimeTypesForFileURLs(file_paths, &mime_types);
+  PathAndMimeTypeSet files;
+  GetMimeTypesForFileURLs(file_paths, &files);
 
   for (ExtensionSet::const_iterator iter = service->extensions()->begin();
        iter != service->extensions()->end();
@@ -915,9 +916,7 @@ bool GetFileTasksFileBrowserFunction::FindAppTasks(
       continue;
 
     typedef std::vector<const extensions::FileHandlerInfo*> FileHandlerList;
-    FileHandlerList file_handlers =
-        FindFileHandlersForMimeTypes(*extension, mime_types);
-    // TODO(benwells): also support matching by file extension.
+    FileHandlerList file_handlers = FindFileHandlersForFiles(*extension, files);
     if (file_handlers.empty())
       continue;