[microdump] Add build fingerprint and product info metadata.

src/client/linux/handler/minidump_descriptor.h

Index: src/client/linux/handler/minidump_descriptor.h
diff --git a/src/client/linux/handler/minidump_descriptor.h b/src/client/linux/handler/minidump_descriptor.h
index ed656cee937cabd484f5b3d5d22f8c91a4c660a9..3584c6922a34f885f7cf510e372fdce460a9cf27 100644
--- a/src/client/linux/handler/minidump_descriptor.h
+++ b/src/client/linux/handler/minidump_descriptor.h
@@ -51,14 +51,18 @@ class MinidumpDescriptor {
 
   MinidumpDescriptor() : mode_(kUninitialized),
                          fd_(-1),
-                         size_limit_(-1) {}
+                         size_limit_(-1),
+                         microdump_build_fingerprint_(NULL),
+                         microdump_product_info_(NULL) {}
 
   explicit MinidumpDescriptor(const string& directory)
       : mode_(kWriteMinidumpToFile),
         fd_(-1),
         directory_(directory),
         c_path_(NULL),
-        size_limit_(-1) {
+        size_limit_(-1),
+        microdump_build_fingerprint_(NULL),
+        microdump_product_info_(NULL) {
     assert(!directory.empty());
   }
 
@@ -66,14 +70,18 @@ class MinidumpDescriptor {
       : mode_(kWriteMinidumpToFd),
         fd_(fd),
         c_path_(NULL),
-        size_limit_(-1) {
+        size_limit_(-1),
+        microdump_build_fingerprint_(NULL),
+        microdump_product_info_(NULL) {
     assert(fd != -1);
   }
 
   explicit MinidumpDescriptor(const MicrodumpOnConsole&)
       : mode_(kWriteMicrodumpToConsole),
         fd_(-1),
-        size_limit_(-1) {}
+        size_limit_(-1),
+        microdump_build_fingerprint_(NULL),
+        microdump_product_info_(NULL) {}
 
   explicit MinidumpDescriptor(const MinidumpDescriptor& descriptor);
   MinidumpDescriptor& operator=(const MinidumpDescriptor& descriptor);
@@ -99,6 +107,18 @@ class MinidumpDescriptor {
   off_t size_limit() const { return size_limit_; }
   void set_size_limit(off_t limit) { size_limit_ = limit; }
 
+  // TODO(primiano): make this and product info (below) just part of the
+  // microdump ctor once it is rolled stably into Chrome. ETA: June 2015.
+  void SetMicrodumpBuildFingerprint(const char* build_fingerprint);
+  const char* microdump_build_fingerprint() const {
+    return microdump_build_fingerprint_;
+  }
+
+  void SetMicrodumpProductInfo(const char* product_info);
+  const char* microdump_product_info() const {
+    return microdump_product_info_;
+  }
+
  private:
   enum DumpMode {
     kUninitialized = 0,
@@ -115,13 +135,25 @@ class MinidumpDescriptor {
 
   // The directory where the minidump should be generated.
   string directory_;
+
   // The full path to the generated minidump.
   string path_;
+
   // The C string of |path_|. Precomputed so it can be access from a compromised
   // context.
   const char* c_path_;
 
   off_t size_limit_;
+
+  // The product name/version and build fingerprint that should be appended to
+  // the dump (microdump only). Microdumps don't have the ability of appending
+  // extra metadata after the dump is generated (as opposite to minidumps
+  // MIME fields), therefore the product details must be provided upfront.
+  // The string pointers are supposed to be valid through all the lifetime of
+  // the process (read: the caller has to guarantee that they are stored in
+  // global static storage).
+  const char* microdump_build_fingerprint_;
+  const char* microdump_product_info_;
 };
 
 }  // namespace google_breakpad