Add viewport with assumption that browser controls always show

chrome/android/javatests/src/org/chromium/chrome/browser/compositor/layouts/MockLayoutHost.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/compositor/layouts/MockLayoutHost.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/compositor/layouts/MockLayoutHost.java b/chrome/android/javatests/src/org/chromium/chrome/browser/compositor/layouts/MockLayoutHost.java
index 26710920e372e41683cd7e648028b5c3943c0e29..74888419b7eec9a14bf4f3ee8a51bc84eb369585 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/compositor/layouts/MockLayoutHost.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/compositor/layouts/MockLayoutHost.java
@@ -94,6 +94,11 @@ class MockLayoutHost implements LayoutManagerHost, LayoutRenderHost {
     }
 
     @Override
+    public void getViewportFullControls(RectF outRect) {
+        outRect.set(0, 0, getWidth(), getHeight());
+    }
+
+    @Override
     public float getHeightMinusBrowserControls() {
         return getHeight();
     }