[inspector] added Debugger.getPossibleBreakpoints method

src/inspector/v8-debugger-agent-impl.cc

Index: src/inspector/v8-debugger-agent-impl.cc
diff --git a/src/inspector/v8-debugger-agent-impl.cc b/src/inspector/v8-debugger-agent-impl.cc
index f318619b35bf2b37a0696f9af59bef791840af77..24b13f1a5e23a59f108c5aab942a3faa7cd6a4de 100644
--- a/src/inspector/v8-debugger-agent-impl.cc
+++ b/src/inspector/v8-debugger-agent-impl.cc
@@ -380,6 +380,49 @@ void V8DebuggerAgentImpl::removeBreakpoint(const String16& breakpointId) {
   m_breakpointIdToDebuggerBreakpointIds.erase(breakpointId);
 }
 
+void V8DebuggerAgentImpl::getPossibleBreakpoints(
+    ErrorString* errorString,
+    std::unique_ptr<protocol::Debugger::Location> start,
+    const Maybe<protocol::Debugger::Location>& end,
+    std::unique_ptr<protocol::Array<protocol::Debugger::Location>>* locations) {
+  String16 scriptId = start->getScriptId();
+  int startLine = start->getLineNumber();
+  int startColumn = start->getColumnNumber(0);
+  int endLine = end.isJust() ? end.fromJust()->getLineNumber() : -1;
+  int endColumn = end.isJust() ? end.fromJust()->getColumnNumber(0) : -1;
+
+  if (end.isJust()) {
+    if (end.fromJust()->getScriptId() != scriptId) {
+      *errorString = "Locations should contain the same scriptId";
+      return;
+    }
+  }
+  auto it = m_scripts.find(scriptId);
+  if (it == m_scripts.end()) {
+    *errorString = "Script not found";
+    return;
+  }
+
+  std::vector<int> positions;
+  if (!it->second->getPossibleBreakpoints(startLine, startColumn, endLine,
+                                          endColumn, positions) ||
+      positions.size() % 2) {
+    *errorString = "Internal error";
+    return;
+  }
+
+  using protocol::Debugger::Location;
+  *locations = protocol::Array<Location>::create();
+  for (size_t i = 0; i < positions.size(); i += 2) {
+    (*locations)
+        ->addItem(Location::create()
+                      .setScriptId(scriptId)
+                      .setLineNumber(positions[i])
+                      .setColumnNumber(positions[i + 1])
+                      .build());
+  }
+}
+
 void V8DebuggerAgentImpl::continueToLocation(
     ErrorString* errorString,
     std::unique_ptr<protocol::Debugger::Location> location) {
@@ -547,7 +590,7 @@ void V8DebuggerAgentImpl::setScriptSource(
     return;
 
   ScriptsMap::iterator it = m_scripts.find(scriptId);
-  if (it != m_scripts.end()) it->second->setSource(m_isolate, newSource);
+  if (it != m_scripts.end()) it->second->setSource(newSource);
 
   std::unique_ptr<Array<CallFrame>> callFrames = currentCallFrames(errorString);
   if (!callFrames) return;