Enable crash keys for cast shell on android

chromecast/crash/cast_crash_keys.cc

Index: chromecast/crash/cast_crash_keys.cc
diff --git a/chromecast/crash/cast_crash_keys.cc b/chromecast/crash/cast_crash_keys.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6ca240f8fd3944aafe9d54bade1694d96dd78199
--- /dev/null
+++ b/chromecast/crash/cast_crash_keys.cc
@@ -0,0 +1,53 @@
+// 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.
+
+#include "chromecast/crash/cast_crash_keys.h"
+
+// TODO(kjoswiak): Potentially refactor chunk size info as well as non-cast
+// specific keys out and make shared with chrome/common/crash_keys.cc.
+namespace {
+
+// A small crash key, guaranteed to never be split into multiple pieces.
+const size_t kSmallSize = 63;
+
+// A medium crash key, which will be chunked on certain platforms but not
+// others. Guaranteed to never be more than four chunks.
+const size_t kMediumSize = kSmallSize * 4;
+
+// A large crash key, which will be chunked on all platforms. This should be
+// used sparingly.
+const size_t kLargeSize = kSmallSize * 16;
+
+// The maximum lengths specified by breakpad include the trailing NULL, so
+// the actual length of the string is one less.
+static const size_t kSingleChunkLength = 63;
+
+}
+
+namespace chromecast {
+namespace crash_keys {
+
+const char kLastApp[] = "last_app";
+const char kCurrentApp[] = "current_app";
+const char kPreviousApp[] = "previous_app";
+
+size_t RegisterCastCrashKeys() {
+  const base::debug::CrashKey fixed_keys[] = {
+    { kLastApp, kSmallSize },
+    { kCurrentApp, kSmallSize },
+    { kPreviousApp, kSmallSize },
+    // base/:
+    { "dm-usage", kSmallSize },
+    { "total-dm-usage", kSmallSize },
+    // content/:
+    { "ppapi_path", kMediumSize },
+    { "subresource_url", kLargeSize },
+  };
+
+  return base::debug::InitCrashKeys(fixed_keys, arraysize(fixed_keys),
+                                    kSingleChunkLength);
+}
+
+}  // namespace chromecast
+}  // namespace crash_keys