Rename WebTestProxy to WebViewTestProxy.

As we continue to split WebView/WebWidget, this change renames
WebTestProxy to WebViewTestProxy, since it should only used for
proxying RenderView calls. A future change will introduce a new
WebWidgetTestProxy for use with RenderWidget.

BUG=583347

Review-Url: https://codereview.chromium.org/2171503005
Cr-Commit-Position: refs/heads/master@{#407165}
diff --git a/components/test_runner/test_runner.h b/components/test_runner/test_runner.h
index d9e1a1ca6..69b2ea5f 100644
--- a/components/test_runner/test_runner.h
+++ b/components/test_runner/test_runner.h
@@ -459,7 +459,7 @@
   // results will be the drag image instead of a snapshot of the page.
   void DumpDragImage();
 
-  // Sets a flag that tells the WebTestProxy to dump the default navigation
+  // Sets a flag that tells the WebViewTestProxy to dump the default navigation
   // policy passed to the decidePolicyForNavigation callback.
   void DumpNavigationPolicy();
 
@@ -468,7 +468,7 @@
   void SetDumpConsoleMessages(bool value);
 
   ///////////////////////////////////////////////////////////////////////////
-  // Methods interacting with the WebTestProxy
+  // Methods interacting with the WebViewTestProxy
 
   ///////////////////////////////////////////////////////////////////////////
   // Methods forwarding to the WebTestDelegate