[chromedriver] Remove unnecessary round trips to Chrome.

chrome/test/chromedriver/chrome/web_view.h

Index: chrome/test/chromedriver/chrome/web_view.h
diff --git a/chrome/test/chromedriver/chrome/web_view.h b/chrome/test/chromedriver/chrome/web_view.h
index f15605c26d209c6106553f6eaf9727e04fcab294..a4ed6a78b85ea89dc94373d8140fbf9ab6919071 100644
--- a/chrome/test/chromedriver/chrome/web_view.h
+++ b/chrome/test/chromedriver/chrome/web_view.h
@@ -19,6 +19,7 @@ class TimeDelta;
 class Value;
 }
 
+class DevToolsClient;
 struct Geoposition;
 class JavaScriptDialogManager;
 struct KeyEvent;
@@ -35,6 +36,9 @@ class WebView {
   // Make DevToolsCient connect to DevTools if it is disconnected.
   virtual Status ConnectIfNecessary() = 0;
 
+  // Return the DevToolsClient.
+  virtual DevToolsClient* GetDevToolsClient() = 0;
+
   // Load a given URL in the main frame.
   virtual Status Load(const std::string& url) = 0;
 
@@ -109,9 +113,6 @@ class WebView {
   virtual Status IsPendingNavigation(
       const std::string& frame_id, bool* is_pending) = 0;
 
-  // Returns the frame id for the main frame.
-  virtual Status GetMainFrame(std::string* out_frame) = 0;
-
   // Returns the JavaScriptDialogManager. Never null.
   virtual JavaScriptDialogManager* GetJavaScriptDialogManager() = 0;