Fix extensions compile issues for Android on sync_unit_tests.

chrome/browser/extensions/extension_infobar_delegate.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/extensions/extension_infobar_delegate.h"
 
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/infobars/infobar.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
@@ skipping 24 matching lines @@
                  content::Source<Profile>(browser->profile()));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
                  content::Source<Profile>(browser->profile()));
 
 #if defined(TOOLKIT_VIEWS) || defined(TOOLKIT_GTK)
   int default_height = InfoBar::kDefaultBarTargetHeight;
 #elif defined(OS_MACOSX)
   // TODO(pkasting): Once Infobars have been ported to Mac, we can remove the
   // ifdefs and just use the Infobar constant below.
   int default_height = 36;
+#elif defined(OS_ANDROID)
+  // TODO(dtrainor): This is not used.  Might need to pull this from Android UI
+  // level in the future.  Tracked via issue 115303.
+  int default_height = 36;
 #endif
   height_ = std::max(0, height);
   height_ = std::min(2 * default_height, height_);
   if (height_ == 0)
     height_ = default_height;
 }
 
 ExtensionInfoBarDelegate::~ExtensionInfoBarDelegate() {
   if (observer_)
     observer_->OnDelegateDeleted();
@@ skipping 36 matching lines @@
     if (extension_host_.get() == content::Details<ExtensionHost>(details).ptr())
       RemoveSelf();
   } else {
     DCHECK(type == chrome::NOTIFICATION_EXTENSION_UNLOADED);
     if (extension_ ==
         content::Details<UnloadedExtensionInfo>(details)->extension) {
       RemoveSelf();
     }
   }
 }