Generalize ExtensionIconSet to store icon paths for custom size sets

chrome/browser/extensions/extension_install_prompt.cc

Index: chrome/browser/extensions/extension_install_prompt.cc
diff --git a/chrome/browser/extensions/extension_install_prompt.cc b/chrome/browser/extensions/extension_install_prompt.cc
index 686b1bcd11f74ae2b802f7855b650dd648f63c81..03c11b9a19a5c284ca7437f5dd8e121a8feea78e 100644
--- a/chrome/browser/extensions/extension_install_prompt.cc
+++ b/chrome/browser/extensions/extension_install_prompt.cc
@@ -25,6 +25,7 @@
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/extension_resource.h"
@@ -435,7 +436,7 @@ void ExtensionInstallPrompt::LoadImageIfNeeded() {
 
   // Load the image asynchronously. For the response, check OnImageLoaded.
   ExtensionResource image =
-      extension_->GetIconResource(ExtensionIconSet::EXTENSION_ICON_LARGE,
+      extension_->GetIconResource(extension_misc::EXTENSION_ICON_LARGE,
                                   ExtensionIconSet::MATCH_BIGGER);
   tracker_.LoadImage(extension_, image,
                      gfx::Size(kIconSize, kIconSize),