Significantly reduce the timeout app_jit is given on the buildbot

tools/testing/dart/compiler_configuration.dart

Index: tools/testing/dart/compiler_configuration.dart
diff --git a/tools/testing/dart/compiler_configuration.dart b/tools/testing/dart/compiler_configuration.dart
index b7ffee31b0d5bd2693f5954cab3d3cf4bc0032b3..d545b3ff160585c1f50820019c595a70b4ebc44e 100644
--- a/tools/testing/dart/compiler_configuration.dart
+++ b/tools/testing/dart/compiler_configuration.dart
@@ -789,8 +789,8 @@ class Dart2AppSnapshotCompilerConfiguration extends CompilerConfiguration {
       : super._subclass(isDebug: isDebug, isChecked: isChecked);
 
   int computeTimeoutMultiplier() {
-    int multiplier = 2;
-    if (isDebug) multiplier *= 4;
+    int multiplier = 1;
+    if (isDebug) multiplier *= 2;
     if (isChecked) multiplier *= 2;
     return multiplier;

[kustermann, 2017/02/10 11:43:45]

The returned value is applied again with 2 due to:

configuration['timeout'] = 60 * compilerMulitiplier * runtimeMultiplier;

This is just changing the first "compilerMultiplier".

   }