Remove uses of base::hash_map from //chrome

chrome/browser/pdf/pdf_extension_test.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 <stddef.h>
 
+#include <map>
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/hash.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/path_service.h"
@@ skipping 573 matching lines @@
   watcher.Wait();
 #if defined(TOOLKIT_VIEWS) && !defined(OS_MACOSX)
   EXPECT_EQ(nullptr, ZoomBubbleView::GetZoomBubble());
 #endif
 }
 
 static std::string DumpPdfAccessibilityTree(const ui::AXTreeUpdate& ax_tree) {
   // Create a string representation of the tree starting with the embedded
   // object.
   std::string ax_tree_dump;
-  base::hash_map<int32_t, int> id_to_indentation;
+  std::map<int32_t, int> id_to_indentation;
   bool found_embedded_object = false;
   for (auto& node : ax_tree.nodes) {
     if (node.role == ui::AX_ROLE_EMBEDDED_OBJECT)
       found_embedded_object = true;
     if (!found_embedded_object)
       continue;
 
     int indent = id_to_indentation[node.id];
     ax_tree_dump += std::string(2 * indent, ' ');
     ax_tree_dump += ui::ToString(node.role);
@@ skipping 410 matching lines @@
 IN_PROC_BROWSER_TEST_F(PDFExtensionTest, OpenFromFTP) {
   net::SpawnedTestServer ftp_server(
       net::SpawnedTestServer::TYPE_FTP, net::SpawnedTestServer::kLocalhost,
       base::FilePath(FILE_PATH_LITERAL("chrome/test/data/pdf")));
   ASSERT_TRUE(ftp_server.Start());
 
   GURL url(ftp_server.GetURL("/test.pdf"));
   ASSERT_TRUE(LoadPdf(url));
   EXPECT_EQ(base::ASCIIToUTF16("test.pdf"), GetActiveWebContents()->GetTitle());
 }