Implementation of GetFavicon for current tab.

chrome/android/java/src/org/chromium/chrome/browser/Tab.java

Index: chrome/android/java/src/org/chromium/chrome/browser/Tab.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/Tab.java b/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
index c3835b6baa0af5c92054476c0b252fb1fc0dcbd2..fb1ff2baf3cd48b88ee88e9b4e366fbde2f40ae6 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
@@ -883,7 +883,9 @@ public class Tab implements NavigationClient {
      *         TODO(bauerb): Upstream implementation.
      */
     public Bitmap getFavicon() {
-        return null;
+        if (mNativeTabAndroid == 0)
+            return null;
+        return nativeGetCurrentTabFavicon(mNativeTabAndroid);
     }
 
     /**
@@ -1151,4 +1153,5 @@ public class Tab implements NavigationClient {
     private native void nativeSetActiveNavigationEntryTitleForUrl(long nativeTabAndroid, String url,
             String title);
     private native boolean nativePrint(long nativeTabAndroid);
+    private native Bitmap nativeGetCurrentTabFavicon(long nativeTabAndroid);
 }