Move UrlBar background drawing to CC.

chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolder.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.compositor;
 
 import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
@@ skipping 29 matching lines @@
 import org.chromium.chrome.browser.contextualsearch.ContextualSearchManagementDelegate;
 import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager;
 import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager.FullscreenListener;
 import org.chromium.chrome.browser.tab.EmptyTabObserver;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tab.TabObserver;
 import org.chromium.chrome.browser.tabmodel.EmptyTabModelSelectorObserver;
 import org.chromium.chrome.browser.tabmodel.TabCreatorManager;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
+import org.chromium.chrome.browser.util.ColorUtils;
 import org.chromium.chrome.browser.widget.ClipDrawableProgressBar.DrawingInfo;
 import org.chromium.chrome.browser.widget.ControlContainer;
 import org.chromium.content.browser.ContentReadbackHandler;
 import org.chromium.content.browser.ContentViewClient;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content.browser.SPenSupport;
 import org.chromium.ui.UiUtils;
 import org.chromium.ui.base.DeviceFormFactor;
 import org.chromium.ui.base.WindowAndroid;
 import org.chromium.ui.resources.ResourceManager;
@@ skipping 620 matching lines @@
         rect.set(0, (int) mLastVisibleContentOffset, getWidth(), getHeight());
         return rect;
     }
 
     @Override
     public int getTopControlsBackgroundColor() {
         return mTabVisible == null ? Color.WHITE : mTabVisible.getThemeColor();
     }
 
     @Override
+    public float getTopControlsUrlBarAlpha() {
+        return mTabVisible == null
+                ? 1.f
+                : ColorUtils.getTextBoxAlphaForToolbarBackground(mTabVisible.getThemeColor());
+    }
+
+    @Override
     public boolean areTopControlsPermanentlyHidden() {
         return mFullscreenManager != null && mFullscreenManager.areTopControlsPermanentlyHidden();
     }
 
     @Override
     public int getTopControlsHeightPixels() {
         return mFullscreenManager != null ? mFullscreenManager.getTopControlsHeight() : 0;
     }
 
     /**
@@ skipping 440 matching lines @@
             if (mPixelRect.width() == 0) {
                 mPixelRect.right = mPixelRect.left + 1;
             }
             if (mPixelRect.height() == 0) {
                 mPixelRect.bottom = mPixelRect.top + 1;
             }
             return mPixelRect;
         }
     }
 }