Fix "unreachable code" warnings (MSVC warning 4702) in chrome/browser/.

chrome/browser/extensions/api/extension_action/browser_action_apitest.cc

 // Copyright (c) 2012 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 "build/build_config.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 41 matching lines @@
 gfx::ImageSkia AddBackgroundForViews(const Extension* extension,
                                      const gfx::ImageSkia& icon) {
 #if defined(TOOLKIT_VIEWS)
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   gfx::ImageSkia bg = *rb.GetImageSkiaNamed(IDR_BROWSER_ACTION);
   // We may have a different background than the default - see
   // BrowserActionButton::UpdateState.
   if (extensions::DevModeBubbleController::IsDevModeExtension(extension))
     bg = *rb.GetImageSkiaNamed(IDR_BROWSER_ACTION_HIGHLIGHT);
   return gfx::ImageSkiaOperations::CreateSuperimposedImage(bg, icon);
+#else
+  return icon;
 #endif
-
-  return icon;
 }
 
 bool ImagesAreEqualAtScale(const gfx::ImageSkia& i1,
                            const gfx::ImageSkia& i2,
                            float scale) {
   SkBitmap bitmap1 = i1.GetRepresentation(scale).sk_bitmap();
   SkBitmap bitmap2 = i2.GetRepresentation(scale).sk_bitmap();
   return gfx::BitmapsAreEqual(bitmap1, bitmap2);
 }
 
@@ skipping 655 matching lines @@
       "backgroundColor);";
   std::string result;
   const std::string frame_xpath;
   EXPECT_TRUE(content::ExecuteScriptInFrameAndExtractString(
       tab, frame_xpath, script, &result));
   EXPECT_EQ(result, "red");
 }
 
 }  // namespace
 }  // namespace extensions