Convert string class names

Automated using git grep & sed.
Replace StringC classes with StringView classes.
Remove the CFX_ prefix and put string classes in fxcrt namespace.
Change AsStringC() to AsStringView().
Rename tests from TEST(fxcrt, *String*Foo) to TEST(*String*,
Foo).
Couple of tests needed to have their names regularlized.

BUG=pdfium:894

Change-Id: I7ca038685c8d803795f3ed02545124f7a224c83d
Reviewed-on: https://pdfium-review.googlesource.com/14151
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
diff --git a/xfa/fde/cfde_textout.h b/xfa/fde/cfde_textout.h
index 89c8eac..b936eb4 100644
--- a/xfa/fde/cfde_textout.h
+++ b/xfa/fde/cfde_textout.h
@@ -95,10 +95,10 @@
   void SetMatrix(const CFX_Matrix& matrix) { m_Matrix = matrix; }
   void SetLineBreakTolerance(float fTolerance);
 
-  void CalcLogicSize(const CFX_WideString& str, CFX_SizeF& size);
-  void CalcLogicSize(const CFX_WideString& str, CFX_RectF& rect);
+  void CalcLogicSize(const WideString& str, CFX_SizeF& size);
+  void CalcLogicSize(const WideString& str, CFX_RectF& rect);
   void DrawLogicText(CFX_RenderDevice* device,
-                     const CFX_WideStringC& str,
+                     const WideStringView& str,
                      const CFX_RectF& rect);
   int32_t GetTotalLines() const { return m_iTotalLines; }
 
@@ -107,7 +107,7 @@
                          float& fStartPos,
                          float& fWidth,
                          float& fHeight);
-  void LoadText(const CFX_WideString& str, const CFX_RectF& rect);
+  void LoadText(const WideString& str, const CFX_RectF& rect);
 
   void Reload(const CFX_RectF& rect);
   void ReloadLinePiece(CFDE_TTOLine* pLine, const CFX_RectF& rect);
@@ -131,7 +131,7 @@
   std::vector<int32_t> m_CharWidths;
   FX_ARGB m_TxtColor;
   uint32_t m_dwTxtBkStyles;
-  CFX_WideString m_wsText;
+  WideString m_wsText;
   CFX_Matrix m_Matrix;
   std::deque<CFDE_TTOLine> m_ttoLines;
   int32_t m_iCurLine;