Removing base::ThreadRestrictions::ScopedAllowIO from icon_manager_linux.cc

chrome/browser/icon_manager.h

Index: chrome/browser/icon_manager.h
diff --git a/chrome/browser/icon_manager.h b/chrome/browser/icon_manager.h
index 875c6d8ac15e770239a9d391d02fc0d0c34f7d42..34c033c0ef4c79701e9f9c5af806cae5bd93e56e 100644
--- a/chrome/browser/icon_manager.h
+++ b/chrome/browser/icon_manager.h
@@ -47,14 +47,11 @@
 
 #include <map>
 
+#include "base/file_path.h"
 #include "chrome/browser/icon_loader.h"
 #include "chrome/common/cancelable_task_tracker.h"
 #include "ui/gfx/image/image.h"
 
-namespace base {
-class FilePath;
-}
-
 class IconManager : public IconLoader::Delegate {
  public:
   IconManager();
@@ -65,7 +62,10 @@ class IconManager : public IconLoader::Delegate {
   // it via 'LoadIcon'. The returned bitmap is owned by the IconManager and must
   // not be free'd by the caller. If the caller needs to modify the icon, it
   // must make a copy and modify the copy.
-  gfx::Image* LookupIcon(const base::FilePath& file_name, IconLoader::IconSize size);
+  gfx::Image* LookupIconFromFilepath(const base::FilePath& file_name,
+                                     IconLoader::IconSize size);
+  gfx::Image* LookupIconFromGroup(const IconGroupID& group,
+                                  IconLoader::IconSize size);
 
   typedef base::Callback<void(gfx::Image*)> IconRequestCallback;
 
@@ -85,11 +85,15 @@ class IconManager : public IconLoader::Delegate {
                                          CancelableTaskTracker* tracker);
 
   // IconLoader::Delegate interface.
-  virtual bool OnImageLoaded(IconLoader* loader, gfx::Image* result) OVERRIDE;
+  virtual bool OnGroupLoaded(IconLoader* loader,
+                             const IconGroupID& group) OVERRIDE;
+  virtual bool OnImageLoaded(IconLoader* loader,
+                             gfx::Image* result,
+                             const IconGroupID& group) OVERRIDE;
 
   // Get the identifying string for the given file. The implementation
   // is in icon_manager_[platform].cc.
-  static IconGroupID GetGroupIDFromFilepath(const base::FilePath& path);
+  static IconGroupID ReadGroupIDFromFilepath(const base::FilePath& path);
 
  private:
   struct CacheKey {
@@ -105,6 +109,9 @@ class IconManager : public IconLoader::Delegate {
   typedef std::map<CacheKey, gfx::Image*> IconMap;
   IconMap icon_cache_;
 
+  typedef std::map<FilePath, IconGroupID> GroupMap;
+  GroupMap group_cache_;
+
   // Asynchronous requests that have not yet been completed.
   struct ClientRequest;
   typedef std::map<IconLoader*, ClientRequest> ClientRequests;