snapshot: Add a minimal ModuleSnapshotMinidump and accessor from ProcessSnapshotMinidump

snapshot/minidump/module_snapshot_minidump.h

Index: snapshot/minidump/module_snapshot_minidump.h
diff --git a/snapshot/mac/module_snapshot_mac.h b/snapshot/minidump/module_snapshot_minidump.h
similarity index 50%
copy from snapshot/mac/module_snapshot_mac.h
copy to snapshot/minidump/module_snapshot_minidump.h
index e86ed432ee5a9c84aa53e82d5d8b0e06d3cf3af5..b04d498a7fd020b748400299e8e0b0f2bbd21a2b 100644
--- a/snapshot/mac/module_snapshot_mac.h
+++ b/snapshot/minidump/module_snapshot_minidump.h
@@ -1,4 +1,4 @@
-// Copyright 2014 The Crashpad Authors. All rights reserved.
+// Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,9 +12,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef CRASHPAD_SNAPSHOT_MAC_MODULE_SNAPSHOT_MAC_H_
-#define CRASHPAD_SNAPSHOT_MAC_MODULE_SNAPSHOT_MAC_H_
+#ifndef CRASHPAD_SNAPSHOT_MINIDUMP_MODULE_SNAPSHOT_MINIDUMP_H_
+#define CRASHPAD_SNAPSHOT_MINIDUMP_MODULE_SNAPSHOT_MINIDUMP_H_
 
+#include <windows.h>
+#include <dbghelp.h>
 #include <stdint.h>
 #include <sys/types.h>
 
@@ -23,35 +25,37 @@
 #include <vector>
 
 #include "base/basictypes.h"
-#include "snapshot/mac/process_reader.h"
 #include "snapshot/module_snapshot.h"
+#include "util/file/file_reader.h"
 #include "util/misc/initialization_state_dcheck.h"
 
 namespace crashpad {
-
-class MachOImageReader;
-struct UUID;
-
 namespace internal {
 
-//! \brief A ModuleSnapshot of a code module (binary image) loaded into a
-//!     running (or crashed) process on a Mac OS X system.
-class ModuleSnapshotMac final : public ModuleSnapshot {
+//! \brief A ModuleSnapshot based on a module in a minidump file.
+class ModuleSnapshotMinidump final : public ModuleSnapshot {
  public:
-  ModuleSnapshotMac();
-  ~ModuleSnapshotMac() override;
+  ModuleSnapshotMinidump();
+  ~ModuleSnapshotMinidump() override;
 
   //! \brief Initializes the object.
   //!
-  //! \param[in] process_reader A ProcessReader for the task containing the
-  //!     module.
-  //! \param[in] process_reader_module The module within the ProcessReader for
-  //!     which the snapshot should be created.
+  //! \param[in] file_reader A file reader corresponding to a minidump file.
+  //!     The file reader must support seeking.
+  //! \param[in] minidump_module_rva The file offset in \a file_reader at which
+  //!     the module’s MINIDUMP_MODULE structure is located.
+  //! \param[in] minidump_crashpad_module_info_location The location in \a
+  //!     file_reader at which the module’s corresponding
+  //!     MinidumpModuleCrashpadInfo structure is located. If no such
+  //!     corresponding structure is available for a module, this may be
+  //!     `nullptr`.
   //!
   //! \return `true` if the snapshot could be created, `false` otherwise with
   //!     an appropriate message logged.
-  bool Initialize(ProcessReader* process_reader,
-                  const ProcessReader::Module& process_reader_module);
+  bool Initialize(FileReaderInterface* file_reader,
+                  RVA minidump_module_rva,
+                  const MINIDUMP_LOCATION_DESCRIPTOR*
+                      minidump_crashpad_module_info_location);
 
   // ModuleSnapshot:
 
@@ -73,16 +77,21 @@ class ModuleSnapshotMac final : public ModuleSnapshot {
   std::map<std::string, std::string> AnnotationsSimpleMap() const override;
 
  private:
-  std::string name_;
-  time_t timestamp_;
-  const MachOImageReader* mach_o_image_reader_;  // weak
-  ProcessReader* process_reader_;  // weak
+  // Initializes data carried in a MinidumpModuleCrashpadInfo structure on
+  // behalf of Initialize().
+  bool InitializeModuleCrashpadInfo(FileReaderInterface* file_reader,
+                                    const MINIDUMP_LOCATION_DESCRIPTOR*
+                                        minidump_module_crashpad_info_location);
+
+  MINIDUMP_MODULE minidump_module_;
+  std::vector<std::string> annotations_vector_;
+  std::map<std::string, std::string> annotations_simple_map_;
   InitializationStateDcheck initialized_;
 
-  DISALLOW_COPY_AND_ASSIGN(ModuleSnapshotMac);
+  DISALLOW_COPY_AND_ASSIGN(ModuleSnapshotMinidump);
 };
 
 }  // namespace internal
 }  // namespace crashpad
 
-#endif  // CRASHPAD_SNAPSHOT_MAC_MODULE_SNAPSHOT_MAC_H_
+#endif  // CRASHPAD_SNAPSHOT_MINIDUMP_MODULE_SNAPSHOT_MINIDUMP_H_