DevTools: merge devtools_http_handler into content - it is used in all the embedders anyways.

android_webview/native/aw_dev_tools_server.h

Index: android_webview/native/aw_dev_tools_server.h
diff --git a/android_webview/native/aw_dev_tools_server.h b/android_webview/native/aw_dev_tools_server.h
index eb0217d62e7ca22894781802952da72f5bba4631..0c74ccfb8883eebfd9d09181b0c7954ec53370e6 100644
--- a/android_webview/native/aw_dev_tools_server.h
+++ b/android_webview/native/aw_dev_tools_server.h
@@ -12,10 +12,6 @@
 
 #include "base/macros.h"
 
-namespace devtools_http_handler {
-class DevToolsHttpHandler;
-}
-
 namespace android_webview {
 
 // This class controls WebView-specific Developer Tools remote debugging server.
@@ -33,9 +29,7 @@ class AwDevToolsServer {
   bool IsStarted() const;
 
  private:
-  std::unique_ptr<devtools_http_handler::DevToolsHttpHandler>
-      devtools_http_handler_;
-
+  bool is_started_;
   DISALLOW_COPY_AND_ASSIGN(AwDevToolsServer);
 };