[DevTools] Remove last bits of logic from v8 agent wrappers.

third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp

Index: third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
diff --git a/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp b/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
index 1291a5664fdd3b9eed6b04b0d4e0d54d20df7c94..0b53f67c2e8667307d993b8b441f826ac10faa29 100644
--- a/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
+++ b/third_party/WebKit/Source/platform/v8_inspector/V8DebuggerAgentImpl.cpp
@@ -210,13 +210,17 @@ bool V8DebuggerAgentImpl::enabled()
     return m_enabled;
 }
 
-void V8DebuggerAgentImpl::enable(ErrorString*)
+void V8DebuggerAgentImpl::enable(ErrorString* errorString)
 {
     if (enabled())
         return;
 
-    enable();
+    if (!m_session->client()->canExecuteScripts()) {
+        *errorString = "Script execution is prohibited";
+        return;
+    }
 
+    enable();
     ASSERT(m_frontend);
 }
 
@@ -281,6 +285,9 @@ void V8DebuggerAgentImpl::clearFrontend()
 void V8DebuggerAgentImpl::restore()
 {
     ASSERT(!m_enabled);
+    if (!m_session->client()->canExecuteScripts())
+        return;
+
     enable();
     ErrorString error;