Add theme color for Blimp on Android.

blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/BlimpContentsImpl.java

Index: blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/BlimpContentsImpl.java
diff --git a/blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/BlimpContentsImpl.java b/blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/BlimpContentsImpl.java
index a90a803bb8a700f688cbcf577f7804a9f586c3af..9342e026389f5d66476b651a4a3e7aac3b52ee5e 100644
--- a/blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/BlimpContentsImpl.java
+++ b/blimp/client/core/contents/android/java/src/org/chromium/blimp/core/contents/BlimpContentsImpl.java
@@ -25,6 +25,8 @@ public class BlimpContentsImpl implements BlimpContents {
                 nativeBlimpContentsImplAndroid, navigationController, blimpView);
     }
 
+    private static final int BLIMP_THEME_COLOR = 0xb3e5fc;
+
     private long mNativeBlimpContentsImplAndroid;
 
     // Given the importance of the navigation controller, this member is kept directly in Java to
@@ -73,6 +75,11 @@ public class BlimpContentsImpl implements BlimpContents {
     }
 
     @Override
+    public int getThemeColor() {
+        return BLIMP_THEME_COLOR;

[David Trainor- moved to gerrit, 2016/09/07 05:08:52]

Add a TODO to get the right theme color when we don't need a clear Blimp
indicator.

[nyquist, 2016/09/07 15:11:04]

I think this TODO also should come with a new crbug that explains what we would
want.

[xingliu, 2016/09/07 17:23:36]

Added a todo that links to a crbug.

+    }
+
+    @Override
     public void addObserver(BlimpContentsObserver observer) {
         assert mNativeBlimpContentsImplAndroid != 0;
         if (mObserverProxy == null) mObserverProxy = new BlimpContentsObserverProxy(this);