Don't attempt to forward declare StringPiece.

1) This is discouraged because it prevents callers from benefiting from automatic coersion from string/char* types.
2) A follow-up CL (http://codereview.chromium.org/8659047/) will make StringPiece a template, and thus awkward to forward declare. The very small number of places that were appropriately forward declaring it do not justify writing a 'string_piece_forward.h'.

BUG=87634
R=brettw@chromium.org


Review URL: http://codereview.chromium.org/8820016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@114124 0039d316-1c4b-4281-b951-d872f2087c98

base/sys_string_conversions.h

@@ -15,6 +15,7 @@
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/string16.h"
+#include "base/string_piece.h"
 
 #if defined(OS_MACOSX)
 #include <CoreFoundation/CoreFoundation.h>
@@ -27,8 +28,6 @@ class NSString;
 
 namespace base {
 
-class StringPiece;
-
 // Converts between wide and UTF-8 representations of a string. On error, the
 // result is system-dependent.
 BASE_EXPORT std::string SysWideToUTF8(const std::wstring& wide);

chrome/browser/extensions/user_script_master.h

@@ -14,6 +14,7 @@
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/shared_memory.h"
+#include "base/string_piece.h"
 #include "chrome/browser/extensions/extension_info_map.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/extensions/extension_set.h"
@@ -22,10 +23,6 @@
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
-namespace base {
-class StringPiece;
-}
-
 namespace content {
 class RenderProcessHost;
 }

chrome/common/jstemplate_builder.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -16,9 +16,10 @@
 
 #include <string>
 
+#include "base/string_piece.h"
+
 namespace base {
 class DictionaryValue;
-class StringPiece;
 }
 
 namespace jstemplate_builder {

chrome/common/net/net_resource_provider.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -6,9 +6,7 @@
 #define CHROME_COMMON_NET_NET_RESOURCE_PROVIDER_H_
 #pragma once
 
-namespace base {
-class StringPiece;
-}
+#include "base/string_piece.h"
 
 namespace chrome_common_net {
 

chrome/renderer/static_v8_external_string_resource.h

@@ -10,10 +10,6 @@
 #include "base/string_piece.h"
 #include "v8/include/v8.h"
 
-namespace base {
-class StringPiece;
-}
-
 // A very simple implementation of v8::ExternalAsciiStringResource that just
 // wraps a buffer. The buffer must outlive the v8 runtime instance this resource
 // is used in.

chrome/test/base/v8_unit_test.h

@@ -10,13 +10,10 @@
 #include <vector>
 
 #include "base/file_path.h"
+#include "base/string_piece.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "v8/include/v8.h"
 
-namespace base {
-class StringPiece;
-}
-
 // A superclass for unit tests that involve running JavaScript.  This class
 // sets up V8 context and has methods that make it easy to execute scripts in
 // this context as well as call functions in the context.

content/shell/shell.h

@@ -11,6 +11,7 @@
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/string_piece.h"
 #include "content/browser/tab_contents/tab_contents_delegate.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -18,10 +19,6 @@ class GURL;
 class SiteInstance;
 class TabContents;
 
-namespace base {
-class StringPiece;
-}
-
 namespace content {
 
 class BrowserContext;