Photo Picker dialog: Don't add toolbar shadow when an image has been selected.

chrome/android/java/src/org/chromium/chrome/browser/widget/selection/SelectableListLayout.java

Index: chrome/android/java/src/org/chromium/chrome/browser/widget/selection/SelectableListLayout.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/widget/selection/SelectableListLayout.java b/chrome/android/java/src/org/chromium/chrome/browser/widget/selection/SelectableListLayout.java
index ab76880a5e0f8e9665b206a0b6c6b5d1b8c76dc1..1806bdb85426ccf7e7e69989038744e874951b78 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/widget/selection/SelectableListLayout.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/widget/selection/SelectableListLayout.java
@@ -107,6 +107,7 @@ public class SelectableListLayout<E>
     private ItemAnimator mItemAnimator;
     SelectableListToolbar<E> mToolbar;
     private FadingShadowView mToolbarShadow;
+    boolean mShowShadowOnSelection;
 
     private int mEmptyStringResId;
     private int mSearchEmptyStringResId;
@@ -224,13 +225,14 @@ public class SelectableListLayout<E>
      *                                   when selection is not enabled. If null the default appbar
      *                                   background color will be used.
      * @param listener The OnMenuItemClickListener to set on the toolbar.
+     * @param showShadowOnSelection Whether to show the toolbar shadow on selection.
      * @return The initialized SelectionToolbar.
      */
     public SelectableListToolbar<E> initializeToolbar(int toolbarLayoutId,
             SelectionDelegate<E> delegate, int titleResId, @Nullable DrawerLayout drawerLayout,
             int normalGroupResId, int selectedGroupResId,
             @Nullable Integer normalBackgroundColorResId,
-            @Nullable OnMenuItemClickListener listener) {
+            @Nullable OnMenuItemClickListener listener, boolean showShadowOnSelection) {
         mToolbarStub.setLayoutResource(toolbarLayoutId);
         @SuppressWarnings("unchecked")
         SelectableListToolbar<E> toolbar = (SelectableListToolbar<E>) mToolbarStub.inflate();
@@ -246,6 +248,7 @@ public class SelectableListLayout<E>
         mToolbarShadow.init(
                 ApiCompatibilityUtils.getColor(getResources(), R.color.toolbar_shadow_color),
                 FadingShadow.POSITION_TOP);
+        mShowShadowOnSelection = showShadowOnSelection;
         delegate.addObserver(this);
         setToolbarShadowVisibility();
 
@@ -385,7 +388,7 @@ public class SelectableListLayout<E>
         if (mToolbar == null || mRecyclerView == null) return;
 
         boolean showShadow = mRecyclerView.canScrollVertically(-1) || mToolbar.isSearching()
-                || mToolbar.getSelectionDelegate().isSelectionEnabled();
+                || (mToolbar.getSelectionDelegate().isSelectionEnabled() && mShowShadowOnSelection);
         mToolbarShadow.setVisibility(showShadow ? View.VISIBLE : View.GONE);
     }