Clean up single namespace forward-declarations

Done using the following ruby script:

Dir.glob('**/*.h').each { |file|
  if File.file?(file)
    s = File.read(file)
    t = s.gsub(/^namespace .+ \{\n\s*class .*;\n\s*\}.*$/) { |m| m.gsub(/\n\s*/, ' ').gsub(/\s*\/\/.*$/, '') }
    if t != s
      puts file
      File.open(file, 'w').write(t)
    end
  end
}

Change-Id: Iffcb966e90eb8e1a625eccd5dd0b94f000ae368e
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/cpptools/completionsettingspage.h

@@ -40,9 +40,7 @@
 namespace CppTools {
 namespace Internal {
 
-namespace Ui {
-class CompletionSettingsPage;
-}
+namespace Ui { class CompletionSettingsPage; }
 
 // TODO: Move this class to the text editor plugin
 

src/plugins/cpptools/cppcodeformatter.h

@@ -48,9 +48,7 @@ class QTextBlock;
 QT_END_NAMESPACE
 
 namespace CppTools {
-namespace Internal {
-class CppCodeFormatterData;
-}
+namespace Internal { class CppCodeFormatterData; }
 
 class CPPTOOLS_EXPORT CodeFormatter
 {

src/plugins/cpptools/cppcodestylesettingspage.h

@@ -53,9 +53,7 @@ class CppCodeStylePreferences;
 
 namespace Internal {
 
-namespace Ui {
-class CppCodeStyleSettingsPage;
-}
+namespace Ui { class CppCodeStyleSettingsPage; }
 
 class CppCodeStylePreferencesWidget : public QWidget
 {

src/plugins/cpptools/cppcompletionassistprovider.h

@@ -39,9 +39,7 @@ QT_BEGIN_NAMESPACE
 class QTextDocument;
 QT_END_NAMESPACE
 
-namespace ProjectExplorer {
-class Project;
-}
+namespace ProjectExplorer { class Project; }
 
 namespace TextEditor {
 class BaseTextEditor;

src/plugins/cpptools/cpphighlightingsupport.h

@@ -38,9 +38,7 @@
 
 #include <QFuture>
 
-namespace TextEditor {
-class ITextEditor;
-}
+namespace TextEditor { class ITextEditor; }
 
 namespace CppTools {
 

src/plugins/cpptools/cpptoolstestcase.h

@@ -41,9 +41,7 @@ namespace CPlusPlus {
 class Document;
 class Snapshot;
 }
-namespace Core {
-class IEditor;
-}
+namespace Core { class IEditor; }
 
 namespace CppTools {
 namespace Tests {