Add eclipse classpath for blimp.

So after run gclient runhooks, we don't need to manually add java build path in eclipse.

Review-Url: https://codereview.chromium.org/2193133003
Cr-Commit-Position: refs/heads/master@{#408876}

tools/android/eclipse/.classpath

@@ -26,6 +26,8 @@ to the classpath for downstream development. See "additional_entries" below.
     <classpathentry kind="src" path="base/test/android/javatests/src"/>
     <classpathentry kind="src" path="blimp/client/app/android/java/src"/>
     <classpathentry kind="src" path="blimp/client/app/android/javatests/src"/>
+    <classpathentry kind="src" path="blimp/client/core/android/java/src"/>
+    <classpathentry kind="src" path="blimp/client/public/android/java/src"/>
     <classpathentry kind="src" path="chrome/android/java/src"/>
     <classpathentry kind="src" path="chrome/android/javatests/src"/>
     <classpathentry kind="src" path="chrome/android/sync_shell/javatests/src"/>