Change most uses of Pickle to base::Pickle

ui/views/controls/textfield/textfield_unittest.cc

 // Copyright 2014 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/views/controls/textfield/textfield.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 999 matching lines @@
       ui::DragDropTypes::DRAG_COPY | ui::DragDropTypes::DRAG_MOVE);
   EXPECT_EQ(ui::DragDropTypes::DRAG_COPY | ui::DragDropTypes::DRAG_MOVE,
             textfield_->OnDragUpdated(drop));
   EXPECT_EQ(ui::DragDropTypes::DRAG_COPY, textfield_->OnPerformDrop(drop));
   EXPECT_STR_EQ("hello string world", textfield_->text());
 
   // Ensure that textfields do not accept non-OSExchangeData::STRING types.
   ui::OSExchangeData bad_data;
   bad_data.SetFilename(base::FilePath(FILE_PATH_LITERAL("x")));
   ui::OSExchangeData::CustomFormat fmt = ui::Clipboard::GetBitmapFormatType();
-  bad_data.SetPickledData(fmt, Pickle());
+  bad_data.SetPickledData(fmt, base::Pickle());
   bad_data.SetFileContents(base::FilePath(L"x"), "x");
   bad_data.SetHtml(base::string16(ASCIIToUTF16("x")), GURL("x.org"));
   ui::OSExchangeData::DownloadFileInfo download(base::FilePath(), NULL);
   bad_data.SetDownloadFileInfo(download);
   EXPECT_FALSE(textfield_->CanDrop(bad_data));
 }
 #endif
 
 TEST_F(TextfieldTest, DragAndDrop_InitiateDrag) {
   InitTextfield();
@@ skipping 1327 matching lines @@
 
   textfield_->SetTextInputType(ui::TEXT_INPUT_TYPE_PASSWORD);
   ui::AXViewState state_protected;
   textfield_->GetAccessibleState(&state_protected);
   EXPECT_EQ(ui::AX_ROLE_TEXT_FIELD, state_protected.role);
   EXPECT_EQ(ASCIIToUTF16("********"), state_protected.value);
   EXPECT_TRUE(state_protected.HasStateFlag(ui::AX_STATE_PROTECTED));
 }
 
 }  // namespace views