Fix nits in the AwPrintManager header.

android_webview/browser/aw_print_manager.h

Index: android_webview/browser/aw_print_manager.h
diff --git a/android_webview/browser/aw_print_manager.h b/android_webview/browser/aw_print_manager.h
index 0166896804b734b5e21a38ad5720abfdf3b792f2..dc6d7439123c3e1584bbbe98a4caf7bf8dd3f086 100644
--- a/android_webview/browser/aw_print_manager.h
+++ b/android_webview/browser/aw_print_manager.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ANDROID_WEBVIEW_BROWSER_PRINT_MANAGER_H_
-#define ANDROID_WEBVIEW_BROWSER_PRINT_MANAGER_H_
+#ifndef ANDROID_WEBVIEW_BROWSER_AW_PRINT_MANAGER_H_
+#define ANDROID_WEBVIEW_BROWSER_AW_PRINT_MANAGER_H_
 
 #include "base/macros.h"
 #include "components/printing/browser/print_manager.h"
@@ -15,7 +15,7 @@ namespace android_webview {
 class AwPrintManager : public printing::PrintManager,
     public content::WebContentsUserData<AwPrintManager> {
  public:
-  // Creates a AwPrintManager for the provided webcontents. If the
+  // Creates an AwPrintManager for the provided WebContents. If the
   // AwPrintManager already exists, it is destroyed and a new one is created.
   static AwPrintManager* CreateForWebContents(
       content::WebContents* contents,
@@ -29,6 +29,7 @@ class AwPrintManager : public printing::PrintManager,
 
  private:
   friend class content::WebContentsUserData<AwPrintManager>;
+
   AwPrintManager(content::WebContents* contents,
                  const printing::PrintSettings& settings,
                  const base::FileDescriptor& file_descriptor,
@@ -44,4 +45,4 @@ class AwPrintManager : public printing::PrintManager,
 
 }  // namespace android_webview
 
-#endif  // ANDROID_WEBVIEW_BROWSER_PRINT_MANAGER_H_
+#endif  // ANDROID_WEBVIEW_BROWSER_AW_PRINT_MANAGER_H_