Replace search_sogou.png with a vector drawable

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

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 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;
 import android.view.ViewStub;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.chrome.R;
@@ skipping 54 matching lines @@
         super.onFinishInflate();
     }
 
     /** Initializes the dialog contents using the given params.  Should only be called once. */
     void initialize(DialogParams params) {
         assert mParams == null && params != null;
         assert params.headerStringResource != 0;
         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);
             ((ViewGroup) mHeaderView.getParent()).removeView(mHeaderView);
             addView(mHeaderView, 0);
 
             // The margins only apply here (after it moves to the root) because the scroll layout it
             // is normally in has implicit padding.
             int marginSize =
                     getContext().getResources().getDimensionPixelSize(R.dimen.dialog_header_margin);
             ApiCompatibilityUtils.setMarginStart(
                     (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);
         }
 
         // Create the header.
         mHeaderView.setText(mParams.headerStringResource);
 
         // Set up the subheader text.
         if (mParams.subheaderStringResource == 0) {
             ((ViewGroup) mSubheaderView.getParent()).removeView(mSubheaderView);
@@ skipping 37 matching lines @@
 
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     }
 
     /** Adds a View to the layout within the scrollable area. */
     void addControl(View control) {
         mScrollableContent.addView(
                 control, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
     }
 }