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..9deb4687d3bf53588a01ac7f85ea0224c2f3fd0f 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.

[Yaron, 2014/07/02 17:43:08]

At a minimum this needs to be updated. We should probably change to something
like "reconcile with the downstream" version.

[Jitu( very slow this week), 2014/07/03 12:21:17]

Done.

      */
     public Bitmap getFavicon() {
-        return null;
+        if (mNativeTabAndroid == 0)
+            return null;
+        return nativeGetFavicon(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 nativeGetFavicon(long nativeTabAndroid);
 }