Stack sampling profiler: fix module read validation failures

components/metrics/public/cpp/call_stack_profile_struct_traits_unittest.cc

 // Copyright 2016 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 <utility>
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "components/metrics/public/interfaces/call_stack_profile_collector_test.mojom.h"
@@ skipping 112 matching lines @@
     {
       Module(1ULL << (sizeof(uintptr_t) * 8) * 3 / 4, "abcd",
              base::FilePath(base::FilePath::kCurrentDirectory)),
       true
     },
     // Empty module id.
     {
       Module(0x10, "", base::FilePath(base::FilePath::kCurrentDirectory)),
       true
     },
-    // Module id at the length limit.
-    {
-      Module(0x10, std::string(40, ' '),
-             base::FilePath(base::FilePath::kCurrentDirectory)),
-      true
-    },
-    // Module id beyond the length limit.
-    {
-      Module(0x10, std::string(41, ' '),
-             base::FilePath(base::FilePath::kCurrentDirectory)),
-      false
-    },
   };
 
   for (const SerializeCase& input : serialize_cases) {
     Module output;
     EXPECT_EQ(input.expect_success,
               proxy_->BounceModule(input.module, &output));
 
     if (!input.expect_success)
       continue;
 
@@ skipping 238 matching lines @@
                              CallStackProfileParams::PRESERVE_ORDER),
       &out));
 
   EXPECT_EQ(CallStackProfileParams::BROWSER_PROCESS, out.process);
   EXPECT_EQ(CallStackProfileParams::UI_THREAD, out.thread);
   EXPECT_EQ(CallStackProfileParams::PROCESS_STARTUP, out.trigger);
   EXPECT_EQ(CallStackProfileParams::PRESERVE_ORDER, out.ordering_spec);
 }
 
 }  // namespace metrics