Fix logging of string16s from gfx namespace on Windows.

I don't why this fixes it, but somehow having a SelectionModel << logging operator in the gfx namespace makes Visual Studio fail to find the << logging operator for string16 arguments.

Per discussion with Scott, we decided to remove the << operators altogether and replace them with a ToString() function to be consistent with Rect, Size, etc.

TEST=Check that adding a "LOG(INFO) << text();" line to RenderTextWin compiles.

Review URL: https://chromiumcodereview.appspot.com/10332205

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@137732 0039d316-1c4b-4281-b951-d872f2087c98

ui/base/range/range.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
 #include "ui/base/range/range.h"
 
 #include <limits>
-#include <ostream>
 
+#include "base/format_macros.h"
 #include "base/logging.h"
+#include "base/stringprintf.h"
 
 namespace ui {
 
@@ -75,8 +76,8 @@ Range Range::Intersect(const Range& range) const {
   return Range(min, max);
 }
 
-std::ostream& operator<<(std::ostream& out, const ui::Range& range) {
-  return out << "{" << range.start() << "," << range.end() << "}";
+std::string Range::ToString() const {
+  return base::StringPrintf("{%" PRIuS ",%" PRIuS "}", start(), end());
 }
 
 }  // namespace gfx

ui/base/range/range.h

@@ -6,7 +6,7 @@
 #define UI_BASE_RANGE_RANGE_H_
 #pragma once
 
-#include <iosfwd>
+#include <string>
 
 #include "base/basictypes.h"
 #include "ui/base/ui_export.h"
@@ -103,13 +103,13 @@ class UI_EXPORT Range {
 #endif
   // GTK+ has no concept of a range.
 
+  std::string ToString() const;
+
  private:
   size_t start_;
   size_t end_;
 };
 
-UI_EXPORT std::ostream& operator<<(std::ostream& out, const ui::Range& range);
-
-}  // namespace gfx
+}  // namespace ui
 
 #endif  // UI_BASE_RANGE_RANGE_H_

ui/gfx/render_text.cc

@@ -47,11 +47,14 @@ void CheckStyleRanges(const gfx::StyleRanges& style_ranges, size_t length) {
   for (gfx::StyleRanges::size_type i = 0; i < style_ranges.size() - 1; i++) {
     const ui::Range& former = style_ranges[i].range;
     const ui::Range& latter = style_ranges[i + 1].range;
-    DCHECK(!former.is_empty()) << "Empty range at " << i << ":" << former;
-    DCHECK(former.IsValid()) << "Invalid range at " << i << ":" << former;
-    DCHECK(!former.is_reversed()) << "Reversed range at " << i << ":" << former;
+    DCHECK(!former.is_empty()) << "Empty range at " << i << ":" <<
+        former.ToString();
+    DCHECK(former.IsValid()) << "Invalid range at " << i << ":" <<
+        former.ToString();
+    DCHECK(!former.is_reversed()) << "Reversed range at " << i << ":" <<
+        former.ToString();
     DCHECK(former.end() == latter.start()) << "Ranges gap/overlap/unsorted." <<
-        "former:" << former << ", latter:" << latter;
+        "former:" << former.ToString() << ", latter:" << latter.ToString();
   }
   const gfx::StyleRange& end_style = *style_ranges.rbegin();
   DCHECK(!end_style.range.is_empty()) << "Empty range at end.";

ui/gfx/selection_model.cc

@@ -4,7 +4,8 @@
 
 #include "ui/gfx/selection_model.h"
 
-#include <ostream>
+#include "base/format_macros.h"
+#include "base/stringprintf.h"
 
 namespace gfx {
 
@@ -23,14 +24,14 @@ bool SelectionModel::operator==(const SelectionModel& sel) const {
          caret_affinity_ == sel.caret_affinity();
 }
 
-std::ostream& operator<<(std::ostream& out, const SelectionModel& sel) {
-  out << '{';
-  if (sel.selection().is_empty())
-    out << sel.caret_pos();
+std::string SelectionModel::ToString() const {
+  std::string str = "{";
+  if (selection().is_empty())
+    base::StringAppendF(&str, "%" PRIuS, caret_pos());
   else
-    out << sel.selection();
-  bool backward = sel.caret_affinity() == CURSOR_BACKWARD;
-  return out << (backward ? ",BACKWARD}" : ",FORWARD}");
+    str += selection().ToString();
+  const bool backward = caret_affinity() == CURSOR_BACKWARD;
+  return str + (backward ? ",BACKWARD}" : ",FORWARD}");
 }
 
 }  // namespace gfx

ui/gfx/selection_model.h

@@ -6,7 +6,7 @@
 #define UI_GFX_SELECTION_MODEL_H_
 #pragma once
 
-#include <iosfwd>
+#include <string>
 
 #include "ui/base/range/range.h"
 #include "ui/base/ui_export.h"
@@ -77,6 +77,8 @@ class UI_EXPORT SelectionModel {
   bool operator==(const SelectionModel& sel) const;
   bool operator!=(const SelectionModel& sel) { return !(*this == sel); }
 
+  std::string ToString() const;
+
  private:
   friend class RenderText;
 
@@ -107,9 +109,6 @@ class UI_EXPORT SelectionModel {
   LogicalCursorDirection caret_affinity_;
 };
 
-UI_EXPORT std::ostream& operator<<(std::ostream& out,
-                                   const SelectionModel& sel);
-
 }  // namespace gfx
 
 #endif  // UI_GFX_SELECTION_MODEL_H_