win: Plumb module PDB name through snapshot

snapshot/mac/module_snapshot_mac.cc

Index: snapshot/mac/module_snapshot_mac.cc
diff --git a/snapshot/mac/module_snapshot_mac.cc b/snapshot/mac/module_snapshot_mac.cc
index 7ddf217d0d0be8f3228dee467682224e5acdca44..939631b7df87955d464a75e678d5f1f150377a74 100644
--- a/snapshot/mac/module_snapshot_mac.cc
+++ b/snapshot/mac/module_snapshot_mac.cc
@@ -156,6 +156,15 @@ void ModuleSnapshotMac::UUIDAndAge(crashpad::UUID* uuid, uint32_t* age) const {
   *age = 0;
 }
 
+void ModuleSnapshotMac::PDBName() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  std::string name = Name();

[Mark Mentovai, 2015/10/28 20:01:10]

Now that we’re in platform-specific code where we know that FilePath will wrap a
string of the right width, this can become a FilePath::BaseName() operation.

[scottmg, 2015/10/28 20:59:24]

Done.

+  size_t last_slash = name.find_last_of('/');
+  if (last_slash != std::string::npos)
+    return name.substr(last_slash + 1);
+  return name;
+}
+
 std::vector<std::string> ModuleSnapshotMac::AnnotationsVector() const {
   INITIALIZATION_STATE_DCHECK_VALID(initialized_);
   MachOImageAnnotationsReader annotations_reader(