Setup the delegate in Chrome, so we may put chrome java functions we need in blimp to the delegate …

blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java

Index: blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java
diff --git a/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java b/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java
index 774f9de33fb6d80426aacb270e34720ae894413e..8df6827ea2fc192efaf8bef003446c0a6ba7746a 100644
--- a/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java
+++ b/blimp/client/core/android/java/src/org/chromium/blimp/core/BlimpClientContextImpl.java
@@ -10,6 +10,7 @@ import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.blimp.core.settings.AboutBlimpPreferences;
 import org.chromium.blimp_public.BlimpClientContext;
+import org.chromium.blimp_public.BlimpClientContextDelegate;
 import org.chromium.blimp_public.BlimpSettingsCallbacks;
 import org.chromium.blimp_public.contents.BlimpContents;
 
@@ -19,6 +20,19 @@ import org.chromium.blimp_public.contents.BlimpContents;
  */
 @JNINamespace("blimp::client")
 public class BlimpClientContextImpl implements BlimpClientContext {
+
+    /**
+     * Get embedder delegate which provides necessary functionality and callbacks.
+     *
+     * The delegate is created through JNI in early startup.
+     *
+     * @return BlimpClientContextDelegate, which contains functions we need in embedder, and can
+     * return null if called before the implementation object is created.
+     */
+    public BlimpClientContextDelegate getDelegate() {
+        return nativeGetDelegateJavaObject(mNativeBlimpClientContextImplAndroid);
+    }
+
     @CalledByNative
     private static BlimpClientContextImpl create(long nativeBlimpClientContextImplAndroid) {
         return new BlimpClientContextImpl(nativeBlimpClientContextImplAndroid);
@@ -64,4 +78,7 @@ public class BlimpClientContextImpl implements BlimpClientContext {
 
     private native BlimpContents nativeCreateBlimpContents(
             long nativeBlimpClientContextImplAndroid);
+
+    private native BlimpClientContextDelegate nativeGetDelegateJavaObject(
+            long nativeBlimpClientContextImplAndroid);
 }