Crash component: adds API for clients to handle the crash minidump.

components/crash/app/breakpad_linux.cc

Index: components/crash/app/breakpad_linux.cc
diff --git a/components/crash/app/breakpad_linux.cc b/components/crash/app/breakpad_linux.cc
index 4fe127b940a617a95938be4f4dde462ec9484bf7..6c862200657be6299cce11f223dde53e0391fde7 100644
--- a/components/crash/app/breakpad_linux.cc
+++ b/components/crash/app/breakpad_linux.cc
@@ -1191,6 +1191,10 @@ void HandleCrashDump(const BreakpadInfo& info) {
   google_breakpad::PageAllocator allocator;
   const char* exe_buf = NULL;
 
+  if (GetCrashReporterClient()->HandleCrashDump(info.filename)) {
+    return;
+  }
+
 #if defined(OS_CHROMEOS)
   // Grab the crashing process' name now, when it should still be available.
   // If we try to do this later in our grandchild the crashing process has