Fixing image canvas resize problems when showing/hiding system UI.

remoting/android/java/res/layout/desktop.xml

Index: remoting/android/java/res/layout/desktop.xml
diff --git a/remoting/android/java/res/layout/desktop.xml b/remoting/android/java/res/layout/desktop.xml
index e85aeae184f3a66e11c95168449a0bf7ac5570d7..ceaf53805342f91bfc1ebe8c7a5f27b771cb6a7b 100644
--- a/remoting/android/java/res/layout/desktop.xml
+++ b/remoting/android/java/res/layout/desktop.xml
@@ -5,18 +5,31 @@
      found in the LICENSE file.
 -->
 
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical">
-    <android.support.v7.widget.Toolbar
-        android:id="@+id/toolbar"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:background="?attr/colorPrimary"
-        android:elevation="4dp"/>
+    android:layout_height="match_parent">
     <org.chromium.chromoting.DesktopView android:id="@+id/desktop_view"
         android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1"/>
-</LinearLayout>
+        android:layout_height="match_parent"/>
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fitsSystemWindows="true"
+        android:elevation="4dp">
+        <android.support.v7.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:alpha="0.85"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:fitsSystemWindows="true"
+            android:background="?attr/colorPrimary"/>
+        <FrameLayout
+            android:id="@+id/resize_detector"
+            android:layout_below="@id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:fitsSystemWindows="true"
+            android:background="@android:color/transparent">
+        </FrameLayout>
+    </RelativeLayout>
+</RelativeLayout>