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..a5162845a85fe11127907e4f5a31e50d12a9febc 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/Tab.java
@@ -883,6 +883,8 @@ public class Tab implements NavigationClient {
      *         TODO(bauerb): Upstream implementation.
      */
     public Bitmap getFavicon() {
+        if (mNativeTabAndroid != 0)

[Bernhard Bauer, 2014/07/02 13:32:28]

Nit: I would probably invert this and bail out early if |mNativeTabAndroid| is
null.

[Jitu( very slow this week), 2014/07/02 13:54:55]

Done.

+            return nativeGetFavicon(mNativeTabAndroid);
         return null;
     }
 
@@ -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);
 }