Use stub impl when libcros fails to load

chrome/browser/chromeos/status/power_menu_button.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/chromeos/status/power_menu_button.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/string_number_conversions.h"
@@ skipping 143 matching lines @@
     PreferredSizeChanged();
     // Force a paint even if the size didn't change.
     SchedulePaint();
   }
 
  protected:
   void OnPaint(gfx::Canvas* canvas) {
     SkBitmap image;
 
     bool draw_percentage_text = false;
-    if (!CrosLibrary::Get()->EnsureLoaded()) {
-      image = GetUnknownImage(LARGE);
-    } else if (!menu_button_->battery_is_present_) {
+    if (!menu_button_->battery_is_present_) {
       image = GetMissingImage(LARGE);
     } else {
       image = GetImage(
           LARGE,
           menu_button_->line_power_on_ ? CHARGING : DISCHARGING,
           menu_button_->battery_index_);
       if (menu_button_->battery_percentage_ < 100 ||
           !menu_button_->line_power_on_) {
         draw_percentage_text = true;
       }
@@ skipping 132 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // PowerMenuButton, views::View implementation:
 void PowerMenuButton::OnLocaleChanged() {
   UpdateIconAndLabelInfo();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // PowerMenuButton, views::ViewMenuDelegate implementation:
 
 void PowerMenuButton::RunMenu(views::View* source, const gfx::Point& pt) {
+  // Explicitly query the power status.
+  CrosLibrary::Get()->GetPowerLibrary()->RequestStatusUpdate();
+
   views::MenuItemView* menu = new views::MenuItemView(this);
   // MenuRunner takes ownership of |menu|.
   menu_runner_.reset(new views::MenuRunner(menu));
   views::MenuItemView* submenu = menu->AppendMenuItem(
           POWER_BATTERY_PERCENTAGE_ITEM,
           std::wstring(),
           views::MenuItemView::NORMAL);
   status_ = new StatusView(this);
   submenu->AddChildView(status_);
   menu->CreateSubmenu()->set_resize_open_menu(true);
@@ skipping 18 matching lines @@
 
 void PowerMenuButton::PowerChanged(PowerLibrary* obj) {
   UpdateIconAndLabelInfo();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // PowerMenuButton, StatusAreaButton implementation:
 
 void PowerMenuButton::UpdateIconAndLabelInfo() {
   PowerLibrary* cros = CrosLibrary::Get()->GetPowerLibrary();
-  if (!cros)
-    return;
 
-  bool cros_loaded = CrosLibrary::Get()->EnsureLoaded();
-  if (cros_loaded) {
-    battery_is_present_ = cros->battery_is_present();
-    line_power_on_ = cros->line_power_on();
+  battery_is_present_ = cros->battery_is_present();
+  line_power_on_ = cros->line_power_on();
 
-    // If fully charged, always show 100% even if internal number is a bit less.
-    if (cros->battery_fully_charged()) {
-      // We always call cros->battery_percentage() for test predictability.
-      cros->battery_percentage();
-      battery_percentage_ = 100.0;
-    } else {
-      battery_percentage_ = cros->battery_percentage();
-    }
-
-    UpdateBatteryTime(&battery_time_to_full_, cros->battery_time_to_full());
-    UpdateBatteryTime(&battery_time_to_empty_, cros->battery_time_to_empty());
+  // If fully charged, always show 100% even if internal number is a bit less.
+  if (cros->battery_fully_charged()) {
+    // We always call cros->battery_percentage() for test predictability.
+    cros->battery_percentage();
+    battery_percentage_ = 100.0;
+  } else {
+    battery_percentage_ = cros->battery_percentage();
   }
 
-  if (!cros_loaded) {
-    battery_index_ = -1;
-    SetIcon(GetUnknownImage(SMALL));
-  } else if (!battery_is_present_) {
+  UpdateBatteryTime(&battery_time_to_full_, cros->battery_time_to_full());
+  UpdateBatteryTime(&battery_time_to_empty_, cros->battery_time_to_empty());
+
+  if (!battery_is_present_) {
     battery_index_ = -1;
     SetIcon(GetMissingImage(SMALL));
   } else {
     // Preserve the fully charged icon for 100% only.
     if (battery_percentage_ >= 100) {
       battery_index_ = kNumPowerImages - 1;
     } else {
       battery_index_ =
           static_cast<int>(battery_percentage_ / 100.0 *
               nextafter(static_cast<float>(kNumPowerImages - 1), 0));
@@ skipping 22 matching lines @@
   // If previous is 0, then it either was never set (initial condition)
   // or got down to 0.
   if (*previous == TimeDelta::FromMicroseconds(kInitialMS) ||
       diff < kMinDiff ||
       diff > kMaxDiff) {
     *previous = current;
   }
 }
 
 }  // namespace chromeos