Reland "Fix startup grey status bar on < M devices"

This is a reland of 27d290e8

Original change's description:
> Fix startup grey status bar on < M devices
> 
> This patch moves the white status bar theme to a version specific
> v23 directory to prevent L and below devices from using the flashing
> between colors. Logic has also been added to ChromeActivity to prevent
> these devices from using the grey (darkened version of white) color on
> startup.
> 
> Bug: 881239
> Change-Id: I41e5d959fab96623d254f4ff2dd0ea15cb6f9abc
> Reviewed-on: https://chromium-review.googlesource.com/1228496
> Commit-Queue: Matthew Jones <mdjones@chromium.org>
> Reviewed-by: Theresa <twellington@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#591857}

Bug: 881239
Change-Id: I96efe736dd6080ba01de2e5c87dca20deac99bf7
Reviewed-on: https://chromium-review.googlesource.com/1230699Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592489}

chrome/android/java/res/values-v17/styles.xml

@@ -54,13 +54,11 @@
     </style>
 
     <style name="TabbedModeThemeBase" parent="MainTheme">
-        <item name="android:statusBarColor" tools:targetApi="21">@color/modern_primary_color</item>
-    </style>
-
-    <style name="TabbedModeTheme" parent="TabbedModeThemeBase">
         <item name="android:windowBackground">@android:color/white</item>
     </style>
 
+    <style name="TabbedModeTheme" parent="TabbedModeThemeBase" />
+
     <style name="FirstRunTheme" parent="DialogWhenLarge">
     </style>
 

chrome/android/java/res/values-v23/styles.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2018 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. -->
+
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <style name="TabbedModeTheme" parent="TabbedModeThemeBase">
+        <item name="android:statusBarColor">@color/modern_primary_color</item>
+        <item name="android:windowLightStatusBar">true</item>
+    </style>
+</resources>
+

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

@@ -559,10 +559,7 @@ public abstract class ChromeActivity<C extends ChromeActivityComponent>
     protected void onInitialLayoutInflationComplete() {
         mInflateInitialLayoutEndMs = SystemClock.elapsedRealtime();
         // Set the status bar color to white by default.
-        setStatusBarColor(null,
-                DeviceFormFactor.isNonMultiDisplayContextOnTablet(this)
-                        ? Color.BLACK
-                        : ColorUtils.getDefaultThemeColor(getResources(), false));
+        setStatusBarColor(ColorUtils.getDefaultThemeColor(getResources(), false), true);
 
         ViewGroup rootView = (ViewGroup) getWindow().getDecorView().getRootView();
         mCompositorViewHolder = (CompositorViewHolder) findViewById(R.id.compositor_view_holder);

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappActivity.java

@@ -896,6 +896,11 @@ public class WebappActivity extends SingleTabActivity {
         // Intentionally do nothing as WebappActivity explicitly sets status bar color.
     }
 
+    @Override
+    protected void setStatusBarColor(int color, boolean isDefaultThemeColor) {
+        // Intentionally do nothing as WebappActivity explicitly sets status bar color.
+    }
+
     @Override
     public boolean onMenuOrKeyboardAction(int id, boolean fromMenu) {
         if (id == R.id.open_in_browser_id) {