Implement a ResourceThrottle for URL overriding in Chrome on Android.

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

Index: chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
diff --git a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
index a5153ddf598fbd906c59ed39cff38f70485bf06b..33741465331a757fd7a7e4456848f745eb0327ce 100644
--- a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
+++ b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
@@ -46,6 +46,8 @@
 // TODO(oshima): Enable this for other platforms.

[joth, 2012/06/13 22:32:49]

nit: either move this TODO inside the #if, or split out the two sections to be
independent #if blocks.

[mkosiba (inactive), 2012/06/15 11:05:36]

Done.

 #if defined(OS_CHROMEOS)
 #include "chrome/browser/renderer_host/offline_resource_throttle.h"
+#elif defined(OS_ANDROID)
+#include "content/public/browser/intercept_navigation_resource_throttle.h"
 #endif
 
 using content::BrowserThread;
@@ -132,14 +134,17 @@ void ChromeResourceDispatcherHostDelegate::RequestBeginning(
     request->set_priority(net::IDLE);
   }
 
-#if defined(OS_CHROMEOS)
   if (resource_type == ResourceType::MAIN_FRAME) {
+#if defined(OS_CHROMEOS)
     // We check offline first, then check safe browsing so that we still can
     // block unsafe site after we remove offline page.
     throttles->push_back(new OfflineResourceThrottle(
         child_id, route_id, request, resource_context));
-  }
+#elif defined(OS_ANDROID)

[joth, 2012/06/13 22:32:49]

again would be tempted to do these as unconnected #if , unless there's a logical
reason we could never have both throttles together?

[mkosiba (inactive), 2012/06/15 11:05:36]

No logical reason to not have the 2 throttles together. It does however make
sense to have an elif since OS_CHROMEOS and OS_ANDROID won't be declared at the
same time.

+    throttles->push_back(
+        content::InterceptNavigationResourceThrottle::Create(request));
 #endif
+  }
 
   AppendChromeMetricsHeaders(request, resource_context, resource_type);