Evict using size in bytes in MemoryCachingByteStore.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index 25063a07580eb1158703c3808cdf559c6a2c7b78..4a1cb93bbe862c625c074a049ac90794ce9b6cbe 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -369,8 +369,9 @@ class AnalysisServer {
     byteStore = new MemoryCachingByteStore(
         new FileByteStore(
             resourceProvider.getStateLocation('.analysis-driver')),
-        1024);
-    analysisDriverScheduler = new nd.AnalysisDriverScheduler(_analysisPerformanceLogger);
+        64 * 1024 * 1024);
+    analysisDriverScheduler =
+        new nd.AnalysisDriverScheduler(_analysisPerformanceLogger);
     analysisDriverScheduler.start();
     if (useSingleContextManager) {
       contextManager = new SingleContextManager(resourceProvider, sdkManager,