clang/win: Attempt to fix component build after #321658.

base/profiler/stack_sampling_profiler.h

 // Copyright 2015 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.
 
 #ifndef BASE_PROFILER_STACK_SAMPLING_PROFILER_H_
 #define BASE_PROFILER_STACK_SAMPLING_PROFILER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 33 matching lines @@
 // When all profiles are complete or the profiler is stopped, if the custom
 // completed callback was set it will be called from the profiler thread with
 // the completed profiles. If no callback was set, the profiles are stored
 // internally and retrieved for UMA through
 // GetPendingProfiles(). GetPendingProfiles() should never be called by other
 // code; to retrieve profiles for in-process processing, set a completed
 // callback.
 class BASE_EXPORT StackSamplingProfiler {
  public:
   // Module represents the module (DLL or exe) corresponding to a stack frame.
-  struct Module {
+  struct BASE_EXPORT Module {
     Module();
     ~Module();
 
     // Points to the base address of the module.
     const void* base_address;
     // An opaque binary string that uniquely identifies a particular program
     // version with high probability. This is parsed from headers of the loaded
     // module.
     // For binaries generated by GNU tools:
     //   Contents of the .note.gnu.build-id field.
     // On Windows:
     //   GUID + AGE in the debug image headers of a module.
     std::string id;
     // The filename of the module.
     FilePath filename;
   };
 
   // Frame represents an individual sampled stack frame with module information.
-  struct Frame {
+  struct BASE_EXPORT Frame {
     Frame();
     ~Frame();
 
     // The sampled instruction pointer within the function.
     const void* instruction_pointer;
     // Index of the module in the array of modules. We don't represent module
     // state directly here to save space.
     int module_index;
   };
 
@@ skipping 113 matching lines @@
 // Defined to allow equality check of Samples.
 BASE_EXPORT bool operator==(const StackSamplingProfiler::Frame& a,
                             const StackSamplingProfiler::Frame& b);
 // Defined to allow ordering of Samples.
 BASE_EXPORT bool operator<(const StackSamplingProfiler::Frame& a,
                            const StackSamplingProfiler::Frame& b);
 
 }  // namespace base
 
 #endif  // BASE_PROFILER_STACK_SAMPLING_PROFILER_H_