Replace search_sogou.png with a vector drawable

chrome/android/java/src/org/chromium/chrome/browser/widget/PromoDialogLayout.java

Index: chrome/android/java/src/org/chromium/chrome/browser/widget/PromoDialogLayout.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/widget/PromoDialogLayout.java b/chrome/android/java/src/org/chromium/chrome/browser/widget/PromoDialogLayout.java
index 511566f0e4f17f70e2b1981c8daf88afc150e4d9..fca6a7e2380fe3b4eb74b215de4de434d47d3a09 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/widget/PromoDialogLayout.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/widget/PromoDialogLayout.java
@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.widget;
 
 import android.content.Context;
+import android.support.graphics.drawable.VectorDrawableCompat;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
@@ -79,7 +80,7 @@ public final class PromoDialogLayout extends BoundedLinearLayout {
         assert params.primaryButtonStringResource != 0;
         mParams = params;
 
-        if (mParams.drawableResource == 0) {
+        if (mParams.drawableResource == 0 && mParams.vectorDrawableResource == 0) {
             // Dialogs with no illustration make the header stay visible at all times instead of
             // scrolling off on small screens.
             ((ViewGroup) mIllustrationView.getParent()).removeView(mIllustrationView);
@@ -94,6 +95,9 @@ public final class PromoDialogLayout extends BoundedLinearLayout {
                     (MarginLayoutParams) mHeaderView.getLayoutParams(), marginSize);
             ApiCompatibilityUtils.setMarginEnd(
                     (MarginLayoutParams) mHeaderView.getLayoutParams(), marginSize);
+        } else if (mParams.vectorDrawableResource != 0) {
+            mIllustrationView.setImageDrawable(VectorDrawableCompat.create(
+                    getResources(), mParams.vectorDrawableResource, getContext().getTheme()));
         } else {
             mIllustrationView.setImageResource(mParams.drawableResource);
         }