Add default icon to app_host.exe, and use it in shortcuts during installation.

chrome/installer/util/browser_distribution.h

Index: chrome/installer/util/browser_distribution.h
diff --git a/chrome/installer/util/browser_distribution.h b/chrome/installer/util/browser_distribution.h
index 7ec1eacd79bcc443d426aa1f41ea32818716e951..8a1f37231a76218ee94a1b5423974d871ed55360 100644
--- a/chrome/installer/util/browser_distribution.h
+++ b/chrome/installer/util/browser_distribution.h
@@ -121,6 +121,11 @@ class BrowserDistribution {
 
   virtual bool CanCreateDesktopShortcuts();
 
+  // Returns the executable file (no path) that Has the icon for the product.
+  virtual string16 GetIconFile();
+
+  // Returns the index of the icon for the product, inside the file specified
+  // from GetIconFile().
   virtual int GetIconIndex();
 
   virtual bool GetChromeChannel(string16* channel);