Remove 'using base::string16;' from base/strings/string16.h and remove temporary

content/common/view_messages.h

 // 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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/strings/string16.h"
@@ skipping 1935 matching lines @@
 
 // Send the tooltip text for the current mouse position to the browser.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_SetTooltipText,
                     base::string16 /* tooltip text string */,
                     blink::WebTextDirection /* text direction hint */)
 
 IPC_MESSAGE_ROUTED0(ViewHostMsg_SelectRange_ACK)
 IPC_MESSAGE_ROUTED0(ViewHostMsg_MoveCaret_ACK)
 
 // Notification that the text selection has changed.
-// Note: The secound parameter is the character based offset of the string16
+// Note: The secound parameter is the character based offset of the
+// base::string16
 // text in the document.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_SelectionChanged,
                     base::string16 /* text covers the selection range */,
                     size_t /* the offset of the text in the document */,
                     gfx::Range /* selection range in the document */)
 
 // Notification that the selection bounds have changed.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_SelectionBoundsChanged,
                     ViewHostMsg_SelectionBounds_Params)
 
@@ skipping 334 matching lines @@
 // display events. If |enabled| is true, the BeginFrame message will continue
 // to be be delivered until the notification is disabled.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_SetNeedsBeginFrame,
                     bool /* enabled */)
 
 // Reply to the ViewMsg_ExtractSmartClipData message.
 // TODO(juhui24.lee@samsung.com): this should be changed to a vector of structs
 // instead of encoding the data as a string which is not allowed normally. Since
 // ths is only used in Android WebView, it's allowed temporarily.
 // http://crbug.com/330872
-IPC_MESSAGE_ROUTED1(ViewHostMsg_SmartClipDataExtracted,
-                    string16)
+IPC_MESSAGE_ROUTED1(ViewHostMsg_SmartClipDataExtracted, base::string16)
 
 #elif defined(OS_MACOSX)
 // Request that the browser load a font into shared memory for us.
 IPC_SYNC_MESSAGE_CONTROL1_3(ViewHostMsg_LoadFont,
                            FontDescriptor /* font to load */,
                            uint32 /* buffer size */,
                            base::SharedMemoryHandle /* font data */,
                            uint32 /* font id */)
 
 // Informs the browser that a plugin has gained or lost focus.
@@ skipping 39 matching lines @@
 // synchronously (see crbug.com/120597). This IPC message sends the character
 // bounds after every composition change to always have correct bound info.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_ImeCompositionRangeChanged,
                     gfx::Range /* composition range */,
                     std::vector<gfx::Rect> /* character bounds */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.