Fix toolbar drawing problem when clearing the clip rect.

chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java

 // Copyright 2015 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.toolbar;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
@@ skipping 1099 matching lines @@
         // mClipRect can change in the draw call, so cache this value to ensure the canvas is
         // restored correctly.
         boolean shouldClip = !mTextureCaptureMode && mClipRect != null;
         if (shouldClip) {
             canvas.save();
             canvas.clipRect(mClipRect);
         }
         super.draw(canvas);
         if (shouldClip) {
             canvas.restore();
+
+            // Post an invalidate when the clip rect becomes null to ensure another draw pass occurs
+            // and the full toolbar is drawn again.
+            if (mClipRect == null) postInvalidate();
         }
     }
 
     @Override
     public void onStateRestored() {
         if (mToggleTabStackButton != null) mToggleTabStackButton.setClickable(true);
     }
 
     @Override
     public boolean isReadyForTextureCapture() {
@@ skipping 784 matching lines @@
 
         getMenuButton().setVisibility(shouldShowMenuButton() ? View.VISIBLE : View.GONE);
     }
 
     @Override
     public LocationBar getLocationBar() {
         return mPhoneLocationBar;
     }
 }