Resize only the virtual viewport when the OSK triggers a resize.

chrome/android/java/src/org/chromium/chrome/browser/InsetConsumerView.java

+// Copyright 2016 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;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Rect;
+import android.os.Build;
+import android.view.View;
+import android.view.WindowInsets;
+
+/**
+ * The purpose of this view is to store the insets (OSK resizes, status bar) for

[Ted C, 2016/03/14 22:53:07]

line length for comments in java is 100 (applies elsewhere)

[ymalik, 2016/03/15 16:23:26]

Done. Update other comments.

+ * later use before they are consumed by the the children views in the view

[Ted C, 2016/03/14 22:53:07]

comment needs to be updated

[ymalik, 2016/03/15 16:23:26]

Done.

+ * hierarchy.
+ */
+public class InsetConsumerView extends View {
+
+    protected final Rect mWindowInsets;
+
+    /**
+     * Constructs a new {@link InsetConsumerView} for the appropriate Android
+     * version.
+     * @param context The Context the view is running in, through which it can
+     *            access the current theme, resources, etc.

[Ted C, 2016/03/14 22:53:07]

align with "The Context..." above.

[ymalik, 2016/03/15 16:23:26]

Done.

+     * @return an instance of a InsetConsumerView.
+     */
+    public static InsetConsumerView create(Context context) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+            return new InsetConsumerView(context);
+        }
+        return new InsetConsumerViewApi21(context);
+    }
+
+    /**
+     * Creates an instance of {@link InsetConsumerView}.
+     * @param context The Context to create this {@link InsetConsumerView} in.
+     */
+    public InsetConsumerView(Context context) {
+        super(context);
+        setVisibility(INVISIBLE);
+        mWindowInsets = new Rect();
+    }
+
+    /**
+     * Returns the left {@link WindowInsets} in pixels.
+     * @return The left system window inset.

[Ted C, 2016/03/14 22:53:07]

for each of these, you can drop the @return.  For simple one liners, we are fine
with just the top sentence.

[ymalik, 2016/03/15 16:23:26]

Done.

+     */
+    public int getSystemWindowInsetsLeft() {
+        return mWindowInsets.left;
+    }
+
+    /**
+     * Returns the top {@link WindowInsets} in pixels.
+     * @return The top system window inset.
+     */
+    public int getSystemWindowInsetsTop() {
+        return mWindowInsets.top;
+    }
+
+    /**
+     * Returns the right {@link WindowInsets} in pixels.
+     * @return The right system window inset.
+     */
+    public int getSystemWindowInsetsRight() {
+        return mWindowInsets.right;
+    }
+
+    /**
+     * Returns the bottom {@link WindowInsets} in pixels.
+     * @return The bottom system window inset.
+     */
+    public int getSystemWindowInsetsBottom() {
+        return mWindowInsets.bottom;
+    }
+
+    @SuppressWarnings("deprecation")
+    @Override
+    protected boolean fitSystemWindows(Rect insets) {
+        // For Lollipop and above, onApplyWindowInsets will set the insets.
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+            mWindowInsets.set(insets.left, insets.top, insets.right, insets.bottom);
+        }
+        return false;
+    }
+
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    private static class InsetConsumerViewApi21 extends InsetConsumerView {
+        /**
+         * Creates an instance of {@link InsetConsumerView} for Android versions
+         * L and above.
+         * @param context The Context to create this {@link InsetConsumerView}
+         *            in.
+         */
+        InsetConsumerViewApi21(Context context) {
+            super(context);
+        }
+
+        @Override
+        public WindowInsets onApplyWindowInsets(WindowInsets insets) {
+            mWindowInsets.set(
+                    insets.getSystemWindowInsetLeft(),
+                    insets.getSystemWindowInsetTop(),
+                    insets.getSystemWindowInsetRight(),
+                    insets.getSystemWindowInsetBottom());
+            return insets;
+        }
+    }
+}