Cleanup: de-inline a bunch of classes, rename and move "PluginInstaller" to "...

chrome/browser/extensions/extension_host.cc

Index: chrome/browser/extensions/extension_host.cc
===================================================================
--- chrome/browser/extensions/extension_host.cc	(revision 72158)
+++ chrome/browser/extensions/extension_host.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -212,10 +212,14 @@
         this);
 }
 
-Browser* ExtensionHost::GetBrowser() const {
+const Browser* ExtensionHost::GetBrowser() const {
   return view() ? view()->browser() : NULL;
 }
 
+Browser* ExtensionHost::GetBrowser() {
+  return view() ? view()->browser() : NULL;
+}
+
 gfx::NativeView ExtensionHost::GetNativeViewOfHost() {
   return view() ? view()->native_view() : NULL;
 }
@@ -791,7 +795,7 @@
     // If the host is bound to a browser, then extract its window id.
     // Extensions hosted in ExternalTabContainer objects may not have
     // an associated browser.
-    Browser* browser = GetBrowser();
+    const Browser* browser = GetBrowser();
     if (browser)
       window_id = ExtensionTabUtil::GetWindowId(browser);
   } else if (extension_host_type_ != ViewType::EXTENSION_BACKGROUND_PAGE) {