Update file version info/memory details/process utils to use string16.

BUG=23581
TEST=everything still works

Review URL: http://codereview.chromium.org/5968008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70071 0039d316-1c4b-4281-b951-d872f2087c98

diff --git a/base/file_version_info_win.h b/base/file_version_info_win.h
index 3d60d69..4a49314 100644
--- a/base/file_version_info_win.h
+++ b/base/file_version_info_win.h

@@ -15,10 +15,6 @@
 struct tagVS_FIXEDFILEINFO;
 typedef tagVS_FIXEDFILEINFO VS_FIXEDFILEINFO;
 
-// Provides a way to access the version information for a file.
-// This is the information you access when you select a file in the Windows
-// explorer, right-click select Properties, then click the Version tab.
-
 class FileVersionInfoWin : public FileVersionInfo {
  public:
   FileVersionInfoWin(void* data, int language, int code_page);
@@ -26,21 +22,21 @@
 
   // Accessors to the different version properties.
   // Returns an empty string if the property is not found.
-  virtual std::wstring company_name();
-  virtual std::wstring company_short_name();
-  virtual std::wstring product_name();
-  virtual std::wstring product_short_name();
-  virtual std::wstring internal_name();
-  virtual std::wstring product_version();
-  virtual std::wstring private_build();
-  virtual std::wstring special_build();
-  virtual std::wstring comments();
-  virtual std::wstring original_filename();
-  virtual std::wstring file_description();
-  virtual std::wstring file_version();
-  virtual std::wstring legal_copyright();
-  virtual std::wstring legal_trademarks();
-  virtual std::wstring last_change();
+  virtual string16 company_name();
+  virtual string16 company_short_name();
+  virtual string16 product_name();
+  virtual string16 product_short_name();
+  virtual string16 internal_name();
+  virtual string16 product_version();
+  virtual string16 private_build();
+  virtual string16 special_build();
+  virtual string16 comments();
+  virtual string16 original_filename();
+  virtual string16 file_description();
+  virtual string16 file_version();
+  virtual string16 legal_copyright();
+  virtual string16 legal_trademarks();
+  virtual string16 last_change();
   virtual bool is_official_build();
 
   // Lets you access other properties not covered above.