Update browserAction.setIcon and pageAction.setIcon for hidpi

chrome/common/extensions/extension_action.cc

Index: chrome/common/extensions/extension_action.cc
diff --git a/chrome/common/extensions/extension_action.cc b/chrome/common/extensions/extension_action.cc
index b2bef14906d110b257e207c05b482a0562204557..5cb673cbc18334da7efc4e8fc61c26030185f900 100644
--- a/chrome/common/extensions/extension_action.cc
+++ b/chrome/common/extensions/extension_action.cc
@@ -304,7 +304,7 @@ void ExtensionAction::SetIcon(int tab_id, const gfx::Image& image) {
 
 gfx::Image ExtensionAction::GetIcon(int tab_id) const {
   // Check if a specific icon is set for this tab.
-  gfx::ImageSkia icon = GetValue(&icon_, tab_id);
+  gfx::ImageSkia icon = GetExplicitlySetIcon(tab_id);
   if (icon.empty()) {
     // Need to find an icon from a path.
     const std::string* path = NULL;
@@ -333,6 +333,10 @@ gfx::Image ExtensionAction::GetIcon(int tab_id) const {
   return gfx::Image(ApplyIconAnimation(tab_id, icon));
 }
 
+gfx::ImageSkia ExtensionAction::GetExplicitlySetIcon(int tab_id) const {
+  return GetValue(&icon_, tab_id);
+}
+
 void ExtensionAction::SetIconIndex(int tab_id, int index) {
   if (static_cast<size_t>(index) >= icon_paths_.size()) {
     NOTREACHED();