[inspector] restore provisional breakpoints smarter

test/inspector/debugger/restore-breakpoint-expected.txt

+Checks that debugger agent uses source content to restore breakpoints.
+
+Running test: testSameSource
+function foo() {
+#boo();
+}
+function foo() {
+#boo();
+}
+
+Running test: testOneLineOffset
+function foo() {
+#boo();
+}
+function foo() {
+#boo();
+boo();
+}
+
+Running test: testTwoSimilarLinesCloseToOriginalLocation1
+function foo() {
+
+
+#boo();
+}
+function foo() {
+#boo();
+
+newCode();
+boo();
+
+
+
+boo();
+}
+
+Running test: testTwoSimilarLinesCloseToOriginalLocation2
+function foo() {
+
+
+#boo();
+}
+function foo() {
+boo();
+newLongCode();
+newCode();
+#boo();
+
+
+
+boo();
+}
+
+Running test: testHintIgnoreWhiteSpaces
+function foo() {
+
+
+
+#boo();
+}
+function foo() {
+foo();
+
+
+#boo();
+}
+
+Running test: testCheckOnlyLimitedOffsets
+function foo() {
+#boo();
+}
+function foo() {
+#newCode();
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;...
+boo();
+}