Don't compile code for desktop zoom or GuestViews on mobile platforms.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index fae4a33bc682b8e4ec8f4e6e39d428134bdb4a6b..854c10c2fac3e86a50d944b7f29a8d768c3b19ef 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -37,7 +37,6 @@
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host.h"
-#include "content/browser/host_zoom_map_impl.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/renderer_host/input/timeout_monitor.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
@@ -101,6 +100,10 @@
 #include "ui/gfx/platform_font_win.h"
 #endif
 
+#if !defined(OS_ANDROID)
+#include "content/browser/host_zoom_map_impl.h"
+#endif
+
 using base::TimeDelta;
 using blink::WebConsoleMessage;
 using blink::WebInputEvent;
@@ -839,11 +842,13 @@ void RenderViewHostImpl::OnDocumentAvailableInMainFrame(
   if (!uses_temporary_zoom_level)
     return;
 
+#if !defined(OS_ANDROID)
   HostZoomMapImpl* host_zoom_map =
       static_cast<HostZoomMapImpl*>(HostZoomMap::Get(GetSiteInstance()));
   host_zoom_map->SetTemporaryZoomLevel(GetProcess()->GetID(),
                                        GetRoutingID(),
                                        host_zoom_map->GetDefaultZoomLevel());
+#endif  // !defined(OS_ANDROID)
 }
 
 void RenderViewHostImpl::OnDidContentsPreferredSizeChange(