Update android.jar classpath for Android O support.

tools/android/eclipse/.classpath

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- {% block header_message %}
 
 Eclipse classpath. See instructions at
 https://www.chromium.org/developers/android-eclipse-dev for setting up Eclipse
 for Chrome Android development.
 
 Obsolete entries can be found using:
 
   for f in $(grep -oP '(?<= path=")[^"]*' tools/android/eclipse/.classpath); do
@@ skipping 208 matching lines @@
     <classpathentry kind="src" path="out/Debug/gen/templates/resource_id_java"/>
     <classpathentry kind="src" path="out/Debug/java_mojo/device_battery_mojo_bindings/src"/>
     <classpathentry kind="src" path="out/Debug/java_mojo/mojo_public_test_interfaces_mojom/src"/>
     <classpathentry kind="src" path="out/Debug/java_proto/cacheinvalidation_proto_java/src"/>
     <classpathentry kind="src" path="out/Debug/java_proto/document_tab_model_info_proto_java/src"/>
     <classpathentry kind="src" path="out/Debug/java_proto/partner_location_descriptor_proto_java/src"/>
     <classpathentry kind="src" path="out/Debug/java_proto/test_support_proto_java/src"/>
     <classpathentry kind="src" path="out/Debug/remoting_apk/gen"/>
     <classpathentry kind="src" path="out/Debug/webview_instrumentation_test_apk/gen"/>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/extras/google/gcm/gcm-client/dist/gcm.jar" sourcepath="third_party/android_tools/sdk/extras/google/gcm/gcm-client/src"/>
-    <classpathentry kind="lib" path="third_party/android_tools/sdk/platforms/android-25/android.jar" sourcepath="third_party/android_tools/sdk/sources/">
+    <classpathentry kind="lib" path="third_party/android_tools/sdk/platforms/android-26/android.jar" sourcepath="third_party/android_tools/sdk/sources/">
         <attributes>
             <attribute name="javadoc_location" value="http://developer.android.com/reference/"/>
         </attributes>
     </classpathentry>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/platforms/android-25/data/layoutlib.jar" sourcepath="third_party/android_tools/sdk/sources/"/>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/platforms/android-25/uiautomator.jar" sourcepath="third_party/android_tools/sdk/sources"/>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/extras/android/support/design/libs/android-support-design.jar" sourcepath="third_party/android_tools/sdk/sources"/>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/extras/android/support/v7/mediarouter/libs/android-support-v7-mediarouter.jar" sourcepath="third_party/android_tools/sdk/sources"/>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/extras/android/support/v7/recyclerview/libs/android-support-v7-recyclerview.jar" sourcepath="third_party/android_tools/sdk/sources"/>
     <classpathentry kind="lib" path="third_party/android_tools/sdk/extras/android/support/v13/android-support-v13.jar" sourcepath="third_party/android_tools/sdk/sources"/>
@@ skipping 73 matching lines @@
     <classpathentry kind="lib" path="out/Debug/lib.java/ui/accessibility/ui_accessibility_java.jar"/>
     <classpathentry kind="lib" path="out/Debug/lib.java/ui/android/ui_java.jar"/>
     <classpathentry kind="lib" path="out/Debug/lib.java/ui/base/mojo/mojo_bindings_java.jar"/>
 
     <!-- {% block additional_entries %} -->
     <!-- When this file is processed as a jinja2 template, additional
          <classpathentry> elements will be inserted here. -->
     <!-- {% endblock %} -->
 
 </classpath>