Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutProvider.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.layouts;
+
+import android.graphics.Rect;
+import android.graphics.RectF;
+
+import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager;
+
+/**
+ * Interface that give access the active layout. This is useful to isolate the renderer of
+ * all the layout logic.
+ * Called from the GL thread.
+ */
+public interface LayoutProvider {
+    /**
+     * @return The layout to be rendered. The caller may not keep a reference of that value
+     * internally because the value may change without notice.
+     */
+    Layout getActiveLayout();
+
+    /**
+     * @param rect RectF instance to be used to store the result and return. If null, it uses a new
+     *             RectF instance.
+     * @return The rectangle of the layout in its View in dp.
+     */
+    RectF getViewportDp(RectF rect);
+
+    /**
+     * @param rect Rect instance to be used to store the result and return. If null, it uses a new
+     *             Rect instance.
+     * @return The rectangle of the layout in its View in pixels.
+     */
+    Rect getViewportPixel(Rect rect);
+
+    /**
+     * @return The manager in charge of handling fullscreen changes.
+     */
+    ChromeFullscreenManager getFullscreenManager();
+}