Rename dart_master.cpp to .cc, consistent with chromium style

sky/engine/bindings-dart/dart_master.cpp

-#include "sky/engine/config.h"
-#include "sky/engine/bindings-dart/dart_master.h"
-
-#include "base/logging.h"
-
-namespace mojo {
-namespace dart {
-
-extern const uint8_t* snapshot_buffer;
-}
-}
-
-namespace blink {
-
-static Dart_Isolate IsolateCreateCallback(const char* script_uri,
-                                          const char* main,
-                                          const char* package_root,
-                                          void* callback_data,
-                                          char** error) {
-  // LOG(INFO) << "IsolateCreateCallback";
-  return nullptr;
-}
-
-static void UnhandledExceptionCallback(Dart_Handle error) {
-  // LOG(INFO) << "UnhandledExceptionCallback";
-}
-
-static void IsolateShutdownCallback(void* callback_data) {
-  // LOG(INFO) << "IsolateShutdownCallback";
-}
-
-static Dart_Isolate ServiceIsolateCreateCallback(void* callback_data,
-                                                 char** error) {
-  // LOG(INFO) << "ServiceIsolateCreateCallback";
-  return nullptr;
-}
-
-void DartMaster::InitVM() {
-  bool result = Dart_SetVMFlags(0, NULL);
-
-  result = Dart_Initialize(IsolateCreateCallback,
-                           nullptr,  // Isolate interrupt callback.
-                           UnhandledExceptionCallback, IsolateShutdownCallback,
-                           // File IO callbacks.
-                           nullptr, nullptr, nullptr, nullptr, nullptr,
-                           ServiceIsolateCreateCallback);
-
-  char* error;
-  Dart_Isolate isolate = Dart_CreateIsolate(
-      "bogus:uri", "main", mojo::dart::snapshot_buffer, nullptr, &error);
-
-  CHECK(isolate);
-
-  Dart_EnterScope();
-
-  Dart_Handle library = Dart_LoadLibrary(
-      Dart_NewStringFromCString("foo:bar"),
-      Dart_NewStringFromCString("main() { int foo = 2; foo++; return foo; }"),
-      0, 0);
-
-  Dart_FinalizeLoading(true);
-
-  if (Dart_IsError(library)) {
-    LOG(INFO) << Dart_GetError(library);
-    abort();
-  }
-
-  Dart_Handle invoke_result =
-      Dart_Invoke(library, Dart_NewStringFromCString("main"), 0, nullptr);
-  if (Dart_IsError(invoke_result)) {
-    LOG(INFO) << Dart_GetError(invoke_result);
-    abort();
-  }
-
-  CHECK(Dart_IsInteger(invoke_result));
-  Dart_Handle str = Dart_ToString(invoke_result);
-  const char* xyz = "invalid";
-  Dart_StringToCString(str, &xyz);
-  LOG(INFO) << xyz;
-}
-}