Revert of CompositorViewHolder is source of truth for viewports

chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerHost.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerHost.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerHost.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerHost.java
index 27cdba3e85aa0fe3ed0df86f6d7e4c1a52e1d09f..f7063f1c9a25cf7566159d364ecd9ce87173f53a 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerHost.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerHost.java
@@ -5,7 +5,6 @@
 package org.chromium.chrome.browser.compositor.layouts;
 
 import android.content.Context;
-import android.graphics.RectF;
 import android.view.View;
 
 import org.chromium.chrome.browser.compositor.TitleCache;
@@ -44,24 +43,6 @@
      * @return The height of the host view.
      */
     int getHeight();
-
-    /**
-     * Get the window's viewport.
-     * @param outRect The RectF object to write the result to.
-     */
-    void getWindowViewport(RectF outRect);
-
-    /**
-     * Get the visible viewport. This viewport accounts for the height of the browser controls.
-     * @param outRect The RectF object to write the result to.
-     */
-    void getVisibleViewport(RectF outRect);
-
-    /**
-     * @return The height of the screen minus the height of the top and bottom browser controls
-     *         when not hidden.
-     */
-    float getHeightMinusBrowserControls();
 
     /**
      * @return The associated {@link LayoutRenderHost} to be used from the GL Thread.