DevTools: clean up V8Debugger.h API, remove parts accessed only from within inspector/v8.

third_party/WebKit/Source/core/inspector/v8/IgnoreExceptionsScope.cpp

Index: third_party/WebKit/Source/core/inspector/v8/IgnoreExceptionsScope.cpp
diff --git a/third_party/WebKit/Source/core/inspector/v8/IgnoreExceptionsScope.cpp b/third_party/WebKit/Source/core/inspector/v8/IgnoreExceptionsScope.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..4b53415d565dc782f2bfcacd7547ab713a42ab07
--- /dev/null
+++ b/third_party/WebKit/Source/core/inspector/v8/IgnoreExceptionsScope.cpp
@@ -0,0 +1,49 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/inspector/v8/IgnoreExceptionsScope.h"
+
+#include "core/inspector/v8/V8DebuggerImpl.h"
+
+namespace blink {
+
+class IgnoreExceptionsScopeImpl {
+public:
+    explicit IgnoreExceptionsScopeImpl(V8DebuggerImpl* debugger)
+        : m_debugger(debugger)
+        , m_previousPauseOnExceptionsState(V8DebuggerImpl::DontPauseOnExceptions)
+    {
+        m_previousPauseOnExceptionsState = setPauseOnExceptionsState(V8DebuggerImpl::DontPauseOnExceptions);
+    }
+    ~IgnoreExceptionsScopeImpl()
+    {
+        setPauseOnExceptionsState(m_previousPauseOnExceptionsState);
+    }
+
+private:
+    V8DebuggerImpl::PauseOnExceptionsState setPauseOnExceptionsState(V8DebuggerImpl::PauseOnExceptionsState newState)
+    {
+        ASSERT(m_debugger);
+        if (!m_debugger->enabled())
+            return newState;
+        V8DebuggerImpl::PauseOnExceptionsState presentState = m_debugger->pauseOnExceptionsState();
+        if (presentState != newState)
+            m_debugger->setPauseOnExceptionsState(newState);
+        return presentState;
+    }
+
+    V8DebuggerImpl* m_debugger;
+    V8DebuggerImpl::PauseOnExceptionsState m_previousPauseOnExceptionsState;
+};
+
+IgnoreExceptionsScope::IgnoreExceptionsScope(V8Debugger* debugger)
+    : m_impl(adoptPtr(new IgnoreExceptionsScopeImpl(static_cast<V8DebuggerImpl*>(debugger))))
+{
+}
+
+IgnoreExceptionsScope::~IgnoreExceptionsScope()
+{
+}
+
+} // namespace blink